一：定語從句的定義
1. 定語從句(attribute clauses)在句中做定語，修飾一個名詞或代詞，被修飾的名詞，詞組或代詞即先行詞。定語從句通常出現(xiàn)在先行詞之后，由關(guān)系代詞或關(guān)系副詞引出。
2. 關(guān)系詞的作用：
a.連接作用，引導(dǎo)定語從句
b.代替先行詞本身
c.在定語從句中擔(dān)當一個成分
二、限制性定語從句
1. 關(guān)系代詞引導(dǎo)的定語從句
代指人(先行詞是人)：who(主語); whom(賓語); that(做主語或賓語);whose(作定語)
Eg1: The man who/whom/that you spoke to just now is our music teacher.(指人，作賓語，可以省略)
Eg2: Is he the man who/that wants to see you?(指人，做主語，不可以省略)
代指物：which; that(作主語或賓語)
Eg1: The book which/that you want to buy has been sold out till now.( 指物，作賓語，可以省略)
Eg2: The book which/that you want to buy has been sold out till now.(指物，做賓語，可以省略)
Eg3: The prosperity which/that has never appeared appears in our country.(指物，做主語，不可省略)
2. 關(guān)系副詞引導(dǎo)定語從句
關(guān)系副詞：關(guān)系副詞可以和關(guān)系代詞互換，通過介詞, prep+which,介詞的選用和先行詞搭配有關(guān)。
When:時間狀語(in/on/during+which)
Where:地點狀語(in/at/on+which)
How:方式狀語(by+which)
Why:原因狀語(for+which)
Eg1: There comes a time when you have to make a choice.(時間狀語)
Eg2: This is the place where he was born/in which he was born.(介詞+which的形式需要看先行詞與動詞的連接)
Eg3: That is the way how you can get the destination.(使用較少，常用在way后面，可以省略)
Eg4: That’s one of the reasons why/that I asked you to come.(特殊之處。可以換that或者省略)
三、非限制性定語從句
非限制性定語從句起補充說明作用，缺少也不會影響全局的理解。非限制性定語從句的前面往往有逗號隔開，可將整個主句作為先行詞，對其進行修飾。
常用引導(dǎo)詞：which和as.
Eg1: This novel, which I have read three times, is very touching.
Eg2：He seems not to grasp what I meant, which greatly upsets me. (先行詞是這個句子)
四、易錯內(nèi)容
即是定語從句中關(guān)于只用that;as的特殊用法。
只能用that的情況：
1. 先行詞是級或被級修飾/序數(shù)詞或被序數(shù)詞修飾/不定代詞;
2. 先行詞既有人又有物;
3. 先行詞被only/the every 等修飾;
4. 在以“which”“who””whom”引起的問句中;
5. “there be”句型中。
As正確用法：
1)“as”引導(dǎo)限制性定語從句
a. ”such…as”
b.“the same …as”
c. “as…as”
2)“as”引導(dǎo)非限制性定語從句常用句式：(as引導(dǎo)非限定性定語從句位置比較靈活，可以出現(xiàn)在主句之前)
As is known to all
As is often the case
As is reported in…
五、實戰(zhàn)運用
這里的實戰(zhàn)運用，其實就是列舉雅思口語part2部分的話題之“a type of book you like to read”，來簡單說明定語從句在雅思口語表達中的作用，其實不難看出上述的題目就是一個限制性定語從只是充當?shù)馁e語成分，所以被省略?？梢姸ㄕZ從句在雅思口語中是無處不在的，考生們一定要掌握。
1. 定語從句(attribute clauses)在句中做定語，修飾一個名詞或代詞，被修飾的名詞，詞組或代詞即先行詞。定語從句通常出現(xiàn)在先行詞之后，由關(guān)系代詞或關(guān)系副詞引出。
2. 關(guān)系詞的作用：
a.連接作用，引導(dǎo)定語從句
b.代替先行詞本身
c.在定語從句中擔(dān)當一個成分
二、限制性定語從句
1. 關(guān)系代詞引導(dǎo)的定語從句
代指人(先行詞是人)：who(主語); whom(賓語); that(做主語或賓語);whose(作定語)
Eg1: The man who/whom/that you spoke to just now is our music teacher.(指人，作賓語，可以省略)
Eg2: Is he the man who/that wants to see you?(指人，做主語，不可以省略)
代指物：which; that(作主語或賓語)
Eg1: The book which/that you want to buy has been sold out till now.( 指物，作賓語，可以省略)
Eg2: The book which/that you want to buy has been sold out till now.(指物，做賓語，可以省略)
Eg3: The prosperity which/that has never appeared appears in our country.(指物，做主語，不可省略)
2. 關(guān)系副詞引導(dǎo)定語從句
關(guān)系副詞：關(guān)系副詞可以和關(guān)系代詞互換，通過介詞, prep+which,介詞的選用和先行詞搭配有關(guān)。
When:時間狀語(in/on/during+which)
Where:地點狀語(in/at/on+which)
How:方式狀語(by+which)
Why:原因狀語(for+which)
Eg1: There comes a time when you have to make a choice.(時間狀語)
Eg2: This is the place where he was born/in which he was born.(介詞+which的形式需要看先行詞與動詞的連接)
Eg3: That is the way how you can get the destination.(使用較少，常用在way后面，可以省略)
Eg4: That’s one of the reasons why/that I asked you to come.(特殊之處。可以換that或者省略)
三、非限制性定語從句
非限制性定語從句起補充說明作用，缺少也不會影響全局的理解。非限制性定語從句的前面往往有逗號隔開，可將整個主句作為先行詞，對其進行修飾。
常用引導(dǎo)詞：which和as.
Eg1: This novel, which I have read three times, is very touching.
Eg2：He seems not to grasp what I meant, which greatly upsets me. (先行詞是這個句子)
四、易錯內(nèi)容
即是定語從句中關(guān)于只用that;as的特殊用法。
只能用that的情況：
1. 先行詞是級或被級修飾/序數(shù)詞或被序數(shù)詞修飾/不定代詞;
2. 先行詞既有人又有物;
3. 先行詞被only/the every 等修飾;
4. 在以“which”“who””whom”引起的問句中;
5. “there be”句型中。
As正確用法：
1)“as”引導(dǎo)限制性定語從句
a. ”such…as”
b.“the same …as”
c. “as…as”
2)“as”引導(dǎo)非限制性定語從句常用句式：(as引導(dǎo)非限定性定語從句位置比較靈活，可以出現(xiàn)在主句之前)
As is known to all
As is often the case
As is reported in…
五、實戰(zhàn)運用
這里的實戰(zhàn)運用，其實就是列舉雅思口語part2部分的話題之“a type of book you like to read”，來簡單說明定語從句在雅思口語表達中的作用，其實不難看出上述的題目就是一個限制性定語從只是充當?shù)馁e語成分，所以被省略?？梢姸ㄕZ從句在雅思口語中是無處不在的，考生們一定要掌握。