云南省大理州民族中學(xué) 何光云 郵編 （671000 ）
It 引導(dǎo)的強調(diào)句型結(jié)構(gòu)為：“It +be 動詞的一定形式 +被強調(diào)部分 + that /who 從句 ”。這一結(jié)構(gòu)是高考常見句型之一。 現(xiàn)將常見考點分析如下：
一． 考查引導(dǎo)詞it和強調(diào)人稱代詞的情況。在該句型中it是固定用法，一般不可用其他詞來替換。人稱代詞是主語時用主格，是賓語時用賓格。例如:Was____that I saw last night at the concert? A. it you B. not you C. you D. that yourself Key: A (MET95’上 海)
二． 考查引導(dǎo)從句的引導(dǎo)詞。注意被強調(diào)部分除指人時均可用that/who外，其他均可用that，即使強調(diào)的是時間，地點或原因狀語時，也不可用when, where或why。
例如 ：（1）.Was it during the Second World War____he died ? A. that B. while C. in which D. then Key : A (MET’88)
(2).It was about 600 years ago____the first clock with a face and an hour hand was made. A .that B. until C. before D. when Key : A (MET’97)
(3).It was only when I reread his poems recently_____I began to appreciate their beauty. A. until B. that C. then D. so Key: B (MET’98)
(4).It was at the gate____he told me the news. A. that B. what C. which D. when Key: A (MET’80)
(5)._____was in 1997_____I graduated from the university. A. That , that B. It ,that C. That , when D. It , when Key : B (MET’98 上海)
(6).Was it in 1969_____the American astronaut succeeded____landing on the moon? A. when , on B. that , on C. when , in D. that , in Key: D (MET’94 上海)
三． 考查強調(diào)狀語時的兩種特殊情況：
1).強調(diào)由not---until引導(dǎo)的狀語或狀語從句時，要把not與until放在一起。
例如：(1).It was not____she took off her dark glasses____I realized she was a famous film star. A. when , that B. until , that C. until , when D .when , then Key: B (MET’92)
(2).It was not until 1920____regular radio broadcasts began. A. while B. which C. that D. since Key: C (MET’95)
2).強調(diào)原因狀語從句時，該從句必須是because引導(dǎo)的原因狀語從句，因為只有because表示的語氣最強。例如：（1）It was because he was ill that he didn’t go to school yesterday. (2).It is___it is raining hard that they can’t go out for an outing. A. as B. since C. for D.because Key: D
四． 考查強調(diào)部分為特殊疑問句的結(jié)構(gòu)，要把特殊疑問詞放在句首，其后接一般疑問句語序。其結(jié)構(gòu)是：疑問詞+is/was+it+that+其他部分。這類句型如出現(xiàn)在賓語從句中，其結(jié)構(gòu)為：疑問詞+it+is/was+that+其他部分。
例如：（1）.Where was it that you met the Frenchman?
(2). What is it that makes man different from other animals?
(3).I really don’t know when it is that she is to arrive in Shanghai.
(4).I can’t quite remember when it was that you started doing the work.
五． 考查強調(diào)句型后面加上附加疑問句時，主語要用it，而不能用原來的主語。
例如：It was John and Mike that you saw in the park yesterday, wasn’t it ？
六． 考查強調(diào)句型的問句回答語時，肯定用Yes,it is/was.否定用 No,it isn’t/wasn’t. Be動詞還可以用復(fù)雜形式：情態(tài)動詞+完成形式。
例如：（1）A: Was it the headmaster who walked by ?
B:It must have been.
(2) __Wasn’t it Dr Wang who spoke to you just now ?
__ _______________.
A.No, he didn’t B. No, he wasn’t C. Yes, he did D. Yes, it was Key: D (MET’96 上海)
七．考查被強調(diào)部分是主語或主語從句的情況。當(dāng)被強調(diào)的部分是主語時，who/that引導(dǎo)的從句的謂語應(yīng)該與被強調(diào)部分在人稱和數(shù)上保持一致。
例如：(1).It is I who am in charge of the factory.
(2).It was they who were making the same mistakes.
(3).Is was___he said____disappointed me.
A. what, that B. that, that C. what, what D .that, what Key: A (MET’99上海)
（4）It was how the young man had learned five foreign languages_____attracted the audience’s interest.
A. so that B. that C. what D. in which Key: B (MET’2000上海)