A cleft sentence is a complex sentence (one having a main clause and a dependent clause) that has a meaning that could be expressed by a simple sentence. Clefts typically put a particular constituent into focus. In spoken language, this focusing is often accompanied by a special intonation.
In English, a cleft sentence can be constructed as follows:
it + conjugated form of to be + X + subordinate clause
where it is a cleft pronoun and X is the cleft constituent, usually a noun phrase (although it can also be a prepositional phrase, and in some cases an adjectival or adverbial phrase). The focus is on X, or else on the subordinate clause or some element of it. For example: It's Joey (whom) we're looking for. It's money that I love. It was from John that she heard the news.
Furthermore, one might also describe a cleft sentence as inverted. That is to say, it has its dependent clause in front of the main clause. So, rather than (for example):
We didn't meet her until we arrived at the hotel.
the cleft would be:
It wasn't until we arrived at the hotel that (or when) we met her.
Types
English is very rich in cleft constructions. Below are examples of some types of clefts found in English, though the list is not exhaustive. See Lambrecht 2001 for a comprehensive survey, Collins 1991 for an in-depth analysis of it-clefts and wh-clefts in English, and Calude 2009 for an investigation of clefts in spoken English.
It-cleft In English, it-clefts consist of the pronoun it, followed by a form of the verb to be, a cleft constituent, and a relativizer, which introduces a relative clause that is attributed to the cleft phrase. Text was copied from this source, which is available under a Creative Commons Attribution 4.0 International License. It-clefts introduce two meanings parts: (1) a presupposition that the property in the clause following the complementiser holds of some entity; and (ii) an assertion that this property holds of the entity denoted by the cleft constituent.
English it-cleft: It was John that Mary saw.
Wh-cleft/Pseudo-cleft In English, pseudo-clefts consist of an interrogative clause in the subject position, followed by a form of the verb be, followed by the focused element that appears at the end of the sentence. The prototypical pseudo-cleft construction uses what, while other wh-words like who, where etc. and their pro-form equivalents like thing, one, place etc. are used less frequently. Pseudo-clefts are tools for presenting and highlighting new information, serving as the building blocks of a coherent discourse progression, and a rhetorical toolkit to construct an authorial stance, being a grammatical resource for making evaluative meaning.
English wh-cleft/pseudo-cleft: What Mary bought was a first edition.
Reversed wh-cleft/Inverted pseudo-cleft In English, an inverted pseudo-cleft consists of the identical structure to pseudoclefting, however, the two strings around the verb be are inverted. The focus element has been brought to the front of the sentence, and the clause is sentence final.
English reversed wh-cleft/inverted pseudo-cleft:
A Fiat is what he wanted to buy. Alice was who John was talking to.
All-cleft In English, all-cleft sentences are related to pseudo-clefts in which they are constructed with the subject of the sentence embedded in the phrase and expressed with the verb "to be". Where pseudo-clefts begin with a wh-phrase (what, where, who), all-clefts begin with the use of the word "all".
English all-cleft:
All he wanted to buy was a Fiat. All they want is a holiday.
Inferential cleft In English, inferential clefts involve a subordinate clause that is embedded as a complement of the verb "to be", and the sentence begins with the subject "it". Oftentimes, an inferential cleft will include an adverb such as only, simply or just. While they are analyzed in written text, data on inferential clefts are often found in spoken language and act as a subordinate clause of the subject they are inferring.
English inferential cleft:
It is not that he loves her. It's just that he has a way with her that is different. It was just that it was raining.
There-cleft Looking at existential sentences, in all languages, they are understood to belong to a grammatically distinct construction, which is utilized to express existential positions. Cleft-sentences in English contain existential sentences that have a dummy there as a subject, be as a main verb, and an NP in the post-verbal complement position. To elaborate, dummy there can be distinguished as an adverbial, pronoun, and subject. Likewise, be can be distinguished as a main verb, and may contain other intransitive verbs such as come, remain, exist, arise, and stand. Lastly, post-verbal NP depends on the discourse of the entity or entities that refer to the novel information it is expressing.
English dummy there-cleft:
There's nobody there. There seemed to be nothing he couldn't do.
English be there-cleft: There comes a stage when a player should move on. English post-verbal NP there-cleft: There was George Talbot and there was Ted. English there-cleft: And then there's a new house he wanted to build.
If-because cleft
English if-because cleft: If he wants to be an actor it's because he wants to be famous.
Other languages Traditional accounts of cleft structures classify these according to the elements involved following English-centric analyses (such as wh-words, the pronoun it, the quantifier all, and so on). This makes it difficult to conduct cross-linguistic investigations of clefts since these elements do not exist in all other languages, which has led to a proposal for a revision of existing cleft taxonomy (see Calude 2009).
However, not all languages are so rich in cleft types as English, and some employ other means for focusing specific constituents, such as topicalization, word order changes, focusing particles and so on (see Miller 1996). Cleftability in Language (2009) by Cheng Luo presents a cross-linguistic discussion of cleftability.
Structural issues The role of the cleft pronoun (it in the case of English) is controversial, and some believe it to be referential,Akmajian 1970, Bolinger 1972, Edmonds 1976, Gundel 1977 and Borkin 1984 while others treat it as a dummy pronoun or empty element.Chomsky 1977, Delin 1989, Delahunty 1982, Heggie 1988, Kiss 1998, Lambrecht 2001 The former analysis has come to be termed the "expletive" view, whereas the latter is referred to as the "extraposition" approach. Hedberg (2002) proposes a hybrid approach, combining ideas from both takes on the status of the cleft pronoun. She shows that it can have a range of scopes (from semantically void to full reference) depending on the context in which it is used.
Similarly controversial is the status of the subordinate clause, often termed the "cleft clause". While most would agree that the cleft clause in wh-clefts can be analysed as some kind of relative clause (free or fused or headless), there is disagreement as to the exact nature of the relative. Traditionally, the wh-word in a cleft such as What you need is a good holiday, pertaining to the relative What you need, is understood to be the first constituent of the relative clause, and to function as its head.
Bresnan and Grimshaw (1978) posit a different analysis. They suggest that the relative clause is headed (rather than headless), with wh-word being located outside the clause proper and functioning as its head. Miller (1996) also endorses this approach, citing cross-linguistic evidence that the wh-word functions as indefinite deictics.
The cleft clause debate gets more complex with it-clefts, where researchers struggle to even agree as to the type of clause that is involved: the traditionalists claim it to be a relative clause (Huddleston and Pullum 2002), while others reject this on the basis of a lack of noun phrase antecedent (Quirk et al. 1985, Sornicola 1988, Miller 1999), as exemplified below: It was because he was ill that we decided to return. It was in September that he first found out about it. It was with great reluctance that Maria accepted the invitation.
The last element of a cleft is the cleft constituent, which typically corresponds to the focus. As mentioned earlier, the focused part of a cleft is typically a noun phrase, but may in fact, turn up to be just about anything:Huddleston and Pullum 2002 provide a comprehensive survey Prepositional phrase: It was on foot that he went there. Adverbial phrase: It was greedily and speedily that Homer Simpson drank his beer. Non-finite clause: It is to address a far-reaching problem that Oxfam is launching this campaign. Gerund: It could be going home early or slacking off at work that the boss reacted to. Adverbial clause: It was because she was so lonely all the time that she decided to move out.
Finally, the issue pertaining to cleft sentences intersects the distinction between canonical and inverse copular sententences as proposed by Andrea Moro in Moro (1997) and many others. A telling minimal pair is the Italian equivalent of what I don't like is strange canonical copular sentence what I don't like is prime numbers inverse copular sentence The first is a canonical copular sentence, namely one where the subject is a DP on the left; the second one is an inverse copular sentence, namely one where the subject is the DP in situ and the predicate has been raised to the position canonically reserved to subject. A direct proof of this is given in language like Italian, for example, where the copula always agrees with the subject. In the inverse copula sentence it agrees with prime numbers showing the underlying structure. Similar considerations can be transferred to it-cleft sentences
Information structure Clefts have been described as "equative" (Halliday 1976), "stative" (Delin and Oberlander 1995) and as "variable-value pairs", where the cleft constituent gives a variable expressed by the cleft clause (Herriman 2004, Declerck 1994, Halliday 1994). A major area of interest with regard to cleft constructions involves their information structure. The concept of "information structure" relates to the type of information encoded in a particular utterance, that can be one of these three: NEW information: things that the speaker/writer expects their hearer/reader might not already know GIVEN information: information that the speaker/writer expects the hearer/reader may be familiar with INFERRABLE information: information that the speaker/writer may expect the hearer/reader to be able to infer either from world knowledge or from previous discourse
The reason why information structure plays such an important role in the area of clefts is largely due to the fact that the organisation of information structure is tightly linked to the clefts' function as focusing tools used by speakers/writers to draw attention to salient parts of their message.
While it may be reasonable to assume that the variable of a cleft (that is, the material encoded by cleft clauses) may be typically GIVEN and its value (expressed by the cleft constituent) is NEW, it is not always so. Sometimes, neither element contains new information, as is in some demonstrative clefts, e.g., That is what I think and sometimes it is the cleft clause that contains the NEW part of the message, as in And that's when I got sick (Calude 2009). Finally, in some constructions, it is the equation between cleft clause and cleft constituent that brings about the newsworthy information, rather than any of the elements of the cleft themselves (Lambrecht 2001).
Other languages Mandarin