用that的引导从句有哪些

使用that引导的从句主要有三种：限定性定语从句、非限定性定语从句和名词性从句。1. 限定性定语从句：修饰先行词，对先行词进行限定说明，不可省略。例如：The book that I bought yesterday is very interesting.2. 非限定性定语从句：对先行词进行补充说明，可省略。例如：He has a brother, who is a doctor.3. 名词性从句：在复合句中充当主语、宾语、表语或同位语。例如：I believe that he will succeed.

'that' serves as a versatile conjunction in English grammar, capable of introducing various types of clauses. This article delves into the different roles 'that' plays in constructing noun clauses and adjective clauses, as well as its special uses.

Noun Clauses Introduced by 'that'

Noun clauses are groups of words that function as a noun in a sentence and are introduced by 'that'. They can be:

• Subject Clauses: "That she was able to come made us very happy." This clause acts as the subject of the sentence, conveying the message that her arrival brought joy.
• Object Clauses: "I know that you will succeed." Here, 'that' introduces the object clause, expressing a belief in someone's success.
• Predicative Clauses: "The truth is that I don't know." In this case, 'that' leads the predicative clause, revealing an unknown fact.
• Appositive Clauses: "The rumor that he is leaving is true." 'that' introduces an appositive clause, providing additional information about the rumor.

Adjective Clauses Introduced by 'that'

Adjective clauses, also known as relative clauses, modify nouns and are often introduced by 'that'. They can be:

• Clauses Missing the Subject: "The man that I saw yesterday is my brother." 'that' here refers to 'the man' and is essential to the meaning of the sentence.
• Clauses Missing the Object: "The book that she is reading is very interesting." In this sentence, 'that' refers to 'the book' and is necessary to complete the idea.

Special Uses of 'that'

Beyond its role in noun and adjective clauses, 'that' has several special uses:

• As a Relative Pronoun: 'that' can modify nouns referring to people or things and can be omitted when it serves as the object of the clause. For example, "The girl that is sitting under the tree is a good runner." Here, 'that' refers to 'the girl' and provides additional information about her.
• In 'there be' Sentences: When the antecedent in a 'there be' sentence is an object, 'that' is used to introduce the clause. For instance, "There is a book that I want to read." 'that' connects the existence of the book with the speaker's desire to read it.
• Replacing 'which': 'that' is used instead of 'which' when the antecedent is modified by a superlative adjective or an ordinal number. For example, "This is the best place that I have ever visited." 'that' is preferred here due to the superlative 'best'.
• For Double Restrictive Relative Clauses: If one clause is introduced by 'who' or 'which', the other is typically introduced by 'that'. For example, "I met a friend who I had known for many years and that I had lost contact with." 'that' is used to introduce the second clause, providing additional details about the friend.
• In Clauses Following 'Here is': 'that' is used to introduce the relative clause in sentences that begin with 'Here is'. For example, "Here is a book that I recommend." 'that' links the book to the speaker's recommendation.

Understanding the various uses of 'that' is crucial for mastering English grammar and enhancing one's ability to construct complex sentences effectively.