專四定語從句語法點

引導語：定語從句，一個簡單句跟在一名詞或代詞後（先行詞）進行修飾限定，就叫做定語從句。下面是小編為大家精心整理的關於專四定語從句語法點，歡迎閲讀！

關係代詞：which（指sth 作主語或賓語），that（指sb或sth 作主語或賓語），who（指sb作主語或賓語），whom（指sb作賓語），whose（指sb或sth，作定語）,as（指sb,sth 作主語或賓語）;注意: 做賓語的時候，關係代詞可以省略。

關係副詞：when（指時間 on which），where（指地點 at which），why（指原因 for which）

考點1. 先行詞為人時引導詞who和that

(1) 只能用who不用that：1)當先行詞為one(s), anyone, those時；2)當先行詞為人稱代詞時。

(2) 只能用that不用who：1)當主句已經出現who時。2)關係代詞在定語從句中作表語時。

1. He is quite worn out from years of hard work. He is not the man _that______ he was twenty years ago.

A. which B. that C. who D. whom

考點2. 先行詞為物時引導詞that和which

(1) 只能用that不用which：1)先行詞為much, little, few, nothing, none, anything, no, all等不定代詞。2）先行詞既有人又有物。3）先行詞被形容詞的最高級或序數詞修飾。4）先行詞被the very, the only, the last, just, all, any, every, no等修飾。5）關係代詞在從句中作表語。6) 在疑問詞who、which、what開頭的句子中。7) 主句是there be句型。

1. I was very interested in _all that____ she told me.

A. all that B. all which C. all what D. That

2. Firms that use computers have found that the number of staff that__is needed for quality control can be substantially reduced.

A. whose B. as C. what D. that

3. The team can handle whatever _that needs handling____.

A. that needs handling B. which needs handling C. it needs handling D. needs to be handled

4. There is no one in the world _that never makes mistakes_____.

A. that ever made mistakes B. that has ever made mistakes

C. that never makes mistakes D. that sometimes makes mistakes

(2) 只能用which不用that: 1)定語從句中的介詞前置時關係代詞只能用which; 2)引導非限制性定語從句時只能用which,其先行詞可是一個詞, 也可是整個主句或主句的某一部分。

1. They overcame all the difficulties and completed the project two months ahead of time, which_____is something we had not expected.

A. which B. it C. that D. what

2. We’ve just installed two air-conditioners in our apartment, which____should make great differences in our life next summer.

A. which B. what C. that D. They

3. The physicist has made a discovery, which I think is_____of great importance to the progress of science and technology.

A. I think which is B. that I think is C. which I think is D. which I think it is

考點3：介詞+關係代詞 (which/ whom)

(1) 關係代詞前介詞的確定方法：定語從句的動詞與先行詞的'邏輯關係，或者從句的動詞、形容詞的習慣性搭配。

1. The party, at which __I was the guest of honour, was extremely enjoyable.

A. by which B. for which C. to which D. at which

2. I’ve never been to Lhasa, but that’s the city _which I like to visit mostly______.

A. I’d most like to visit B. which I like to visit mostly C. where I like to visit D. I’d like much to visit

3. The Clarks haven’t decided yet which hotel_to stay_at_____.

A. to stay B. is to stay C. to stay at D. is for staying

4.I have never been to London, but that is the city _which I like to visit mostly_______.

A. where I like to visit most B. I'd most like to visit.

C. which I like to visit mostly D. where I'd like most to visit

(2) 非限制性定語從句中，表示先行詞的一部分時，可用“數詞/代詞+of+關係代詞”的結構;

(3) Whose從句可轉換為“ of +關係代詞”型，whose的先行詞指物時, 可用of which代替,

但詞序不同，即whose+n=the +n + of which =of which + the + n.

1. Above the trees are the hills, _whose______ magnificence the river faithfully reflects on the surface.

A. where B. of whose C. whose D. which

考點4：關係副詞的運用

⑴ 先行詞為“時間的名詞”用when

1. She remembered several occasions in the past _when___she had experienced a similar feeling.

A. which B. before C. that D. when

⑵ 先行詞為“表示地點的名詞”（case, point, situation, condition, scene, stage, country, room, house, hotel, museum, school, street等）用where

1. Have you ever been in a situation _where____ you know the other person is right yet you cannot agree with him?

A. by which B. that C. in where D. Where

2. This company has now introduced a policy _where____pay rises have related to performance at work.

A. which B. where C. whether D. what

⑶ 先行詞為“表示原因的名詞”why：reason＋why…（表示原因的名詞只有一個）

考點5：as與which引導的定語從句

as 放在句首句中都可以，which 必需放在句中，但下列情況多用as: 1) 關係代詞引導的定語從句居句首時。2) 當與such as或the same連用時，一般用as。3) 當主句和從句之間存在着邏輯上的因果關係時，關係詞往往只用which。

1. Only take these clothes _as are_____really necessary.

A. as were B. as they are C. as they were D. as are

2. As_____ is often the case with a new idea, much preliminary activity and optimistic discussion produced no concrete proposals.

A. That B. It C. This D. As

三大注意：

1. the way 做先行詞時，定語從句可由that, in which 引導或不用引導詞。

2. 定語從句中主謂一致問題：從句中的動詞在人稱和數方面應該與它的先行詞保持一致。

He is one of the teachers who know English well.

He is the only one of the teachers who knows English well.(特殊)

3.疑問句的解題思路：先把疑問句還原成陳述句，然後判斷誰是先行詞，再看關係詞在定語從句中所充當的成分，最後確定正確答案。