評論
打印
一、定語從句
限制性定語從句，前邊沒有逗號，可以用that引導，從句中缺賓語時引導詞可以省略。
非限制性定語從句，前有逗號，不能用that引導，引導詞不能省略。
二、關系代詞
人 who/that who/whom/that whose
物 which/that which/that whose
注意：1)先行詞在從句中作賓語時，引導詞可以省略(非限制性定語從句不可以);
2) 介詞后不能跟 that，who;
3)who在從句中作賓語時為不規范用法。
既缺先行詞，又缺引導詞的情況，如：
1)Is this factory ____ we visited last year?
2)Is this the factory ____we visited last year?
A. that B. which C. the one D.what
解析：此類題目我們應先將其變為陳述句。1)變后為：This factory is ____ we visited last year.再有其漢語意思“這個工廠是我們去年參觀的那一個”。可知1)中缺少先行詞，答案中只有項the one 這個代詞可以充當。故1)答案 C。
2)變為陳述句后為：This is the factory ____ we visited last year.由此可知此句缺少引導詞。切先行詞在從句中作賓語，因此答案為A或B。
三、介詞前置
從句中與先行詞搭配的介詞可放到引導詞前。
The athlete whom you talked to is a famous runner.= The athlete to whom you talked is a famous runner.
但含有介詞的短語動詞一般不拆開，介詞仍放在動詞的后面。
The old man whom the nurses are looking after is very well now.
四、關系副詞=介詞+關系代詞(which)
I still remember the day when I first came to Beijing.= I still remember the day on which I first came to Beijing。
such+先行詞+as+定語從句
the same+先行詞 +as+定語從句
Eg: I like the same book as you do.
