高中英语语法定语从句易错点
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定语从句

引导定语从句的关系代词有that,which,who(宾格whom,所有格whose)和关系副词 where when why 等,关系代词或关系副词在定语从句中充当一个成分,关系代词that,which,who,whom等在从句中分别作主语或宾语,whose在从句中作定语,而关系副词when,where,why等在从句中作状语。 如:

1.I will never forget the days when/in which we worked together.

2.I will never forget the days which/that we spent together.

解析在句中,表示时间的名词the days在从句中充当的是状语,所以用关系副词when来代指,引导定语从句修饰先行词the days;

而在句中,表示时间的名词the days在从句中充当的是动词spent的宾语,所以用关系代词that或which来代指。

同样,表示地点或原因的名词如果在从句中作状语,则用关系副词where 或why来代指;如果在从句中作动词的宾语,则用which或that来代替。 如:

1.This is the factory where/in which I worked.(作状语)

2.This is the factory that/which I visited years ago.(作宾语)

注:当先行词为time,reason, place时,引导词可以省略。如:

1.This was the first (when/what) I had serious trouble with my boss.

2.That is the reason (why) I did it.

3.This is the place (where) we met yesterday.

另外,定语从句中谓语动词的数应与先行词的数相一致。如:

1.Mr. Jackson is the only foreigner that is present at the party.

2.He is one of the students who were praised by the teacher.

解析:在句中,先行词foreigner被only修饰,强调只有一个,所以从句中谓语动词用单数形式,而在句中,who引导的定语从句修饰先行词the students,为复数,所以从句谓语动词应为复数。


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