英語定語從句考點及命題規律分析

1. 考查which引導的非限制性定語從句

which引導非限制性定語從句，用以指代整個主句的內容，或主句中某個詞或短語的內容。如：

(1) By serving others, a person focuses on someone other than himself or herself, _______ can be very eye-opening and rewarding.

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

答案為B。which在此引導非限制性定語從句，which在定語從句中用作主語，表示前面所提到的情況。

(2) Chan’s restaurant on Baker Street, _______ used to be poorly run, is now a successful business.

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

答案為B。which used to be poorly run為非限制性定語從句，其中的which指代前面的China’s restaurant。

2. 考查as引導的非限制性定語從句

as也可指代整個主句的內容，但不同于which的是，它引導的定語從句既可以位于主句的前面，也可以位于主句的后面。它的意思是“正如”，在這些從句中as 作主語或賓語。如：

(1) _______ I explained on the phone, your request will be considered at the next meeting.

A. When               B. After                  C. As                         D. Since

答案為。as 引導定語從句，其意為“正如”。

(2) _______ is often the case, we have worked out the production plan.

A. Which              B. When                C. What                 D. As

答案為D。解析：引導非限制性定語從句且位于主句之前，用as引導。答案分別為CBD。

3. 考查由“介詞＋關系代詞”引導的定語從句

“介詞+關系代詞”結構中的關系代詞主要是which或whom，不能是that；其中的介詞則要根據句子中的相關搭配來確定。如：

(1) He was educated at the local high school, _______ he went on to Beijing University.

A. after which      B. after that           C. in which           D. in that

答案為A。after which中的which指“他在當地一所高中接受教育”，after which的意思就是“在當地一所高中接受完教育之后(即高中畢業之后)”。

(2) She was educated at Beijing University, _______ she went on to have her advanced study abroad.

A. after which      B. from which       C. from that           D. after that

答案為A。after which在此引導非限制性定語從句，相當于and after that。又如：This I did at nine o’clock, after which I sat reading the paper. 九點時我做這件事，之后我就坐在那里看報。

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