定语从句
1、elbert einstein, for ______ life had once been very hard, was successful later in science .
a. whom b. whose c. which d. his
选a。容易选b。原因是受思维定势的影响认为whose life是一个整体。定语从句的主语应该是life， 本句可以改写为: life had once been very hard for him, 所以在定语从句中介词for还缺少了一个宾语。所以选a。
2、______ he told us is the news _______ china has got 32 gold medals in the 28th olympic games in athens, _________, of course, made the nations feels very excited.
a. what; which; which b. that; that; which
c. what; that; which d. that; that; what
选c。第一空用what作told的宾语构成主语从句； 第二个空用that引导同位语从句，说明the news的具体内容；第三个空用which引导一个非限制性定语从句，先行词为前面整个句子所表达的内容。
3、a computer is so useful a machine ________ we can use everywhere.
a. that b. which c. as d. what
选c。本题考查句子结构和关系代词的选用。首先表示认清句子结构，use后面应该接一个及物动词，先行词应该充当宾语，而前面出现so useful不能用that与which来修饰，可以排除。另外，what 不能引导定语从句。
练习：
1.we saw a film yesterday afternoon , _____we had supper in a nearby restaurant.
a.when b.which c.before it d.after which
2．there comes a time in every man's life_____.
a.that he needs to think b.when he has to think
c.therefore he has to work hard d.then he will need it
3．although he knew little about the large amount of work done in the field, he succeeded_____ other more well-informed experiments failed.
a.which b.that c.what d.where
4．on the third floor there are two rooms, _____ is used as a meeting-room.
a.one of them b.the larger of which
c.and a larger of of them d.the largest one of which
5．--- are you familiar with the music ?
--- yes. there was a time _____ this kind of music was quite popular.
a.when b.that c.with which d.about which
6.he has got himself into a dangerous situation ____ he is likely to lose control over the plane.
a.where b.which c.while d.why
7._____ was known to all , willian had broken his promise ______ he would give us a rise.
a.as; which b.as; that c.it; that d.it ; which
答案：1-5:dbdba 6-7:cb