上海依红科技有限公司:使用than的常见语法难点

来源:百度文库 编辑:偶看新闻 时间:2024/05/04 22:47:21

使用 than 的常见语法难点

  

一、后接人称代词用主格还是宾格

由于than既可用作连词也可用作介词,所以当后接人称代词时,可用主格也可用宾格。通常认为在正式文体中多用主格,在口语或非正式文体中多用宾语。如:

Everyone here is taller than I [me]. 这儿的每一个人都比我高。

Her sister swims faster than she [her]. 她姐姐游泳比她快。

但是,若人称代词之后跟有动词,则只能用主格。如:

Everyone here is taller than I am. 这儿的每一个人都比我高。

Her sister swims faster than she does. 她姐姐游泳比她快。

注意:有时用主格或宾格会导致意思的变化。比较:

I love you more than he (likes you). 我比他更爱你。

I love you more than (he likes) him. 我爱你胜过爱他。

 

二、后接动词用不定式还是动名词

1. 当连接两个非谓语动词时,通常应使用一样的形式。如:

It is much easier to get into debt than to get out of it. 借债容易还债难。

He likes playing chess more than watching TV. 与看电视相比,他更喜欢下棋。

比较:

He thinks it is safer to drive himself than (to) let me drive.

=He thinks that driving himself is safer than letting me drive. 他认为他自己开车比让我开车要更安全些。

2. 若不是连接两个非谓语动词,则其后出现的动词通常用动名词形式(虽然也可用不定式,但不如用动名词普通)。如:

There are worse calamities than failing your driving test. 比起你驾驶考试不合格来说,更大的灾难还多着呢。

Nothing gives me more pleasure than listening to Mozart. 再没有比听莫扎特的乐曲更让我高兴的事了。

Nothing is more unpleasant than finding [to find] insects in your bath. 最使人不快的是在浴室里发现有虫子。

 

三、引导比较状语从句的时态问题

than引导的比较状语从句与主句动作不一致,可以根据情况使用适当的时态形式。如:

He drives faster than he did a year ago. 他开车比一年以前快了。

The house is rather bigger than we thought. 这所房子比我们想的大得多。

若主句为将来时,than引导的从句可用现在时态表示将来,也可直接使用将来时态。如:

We’ll probably drive faster than you do [will]. 我们开车可能会比你们快。

 

四、引导比较状语从句的倒装问题

than引导比较状语从句时,从句语序通常不需倒装,但在正式文体中,有时也可倒装。如:

City dweller have a higher death rate than country people do.

=City dweller have a higher death rate than do country people. 城市居民死亡率比农村居民高。

 

五、引导比较状语从句且在从句中充当成分

有时可引导一个从句并在从句中充当句子成分(主语、宾语、表语),为便于理解,有时可视为than后省略了what

We don’t want to do more than is necessary. 我们不想做不必要的事情。

The pain was almost more than he could bear. 这样的痛苦几乎使他受不了。

She’s not a very good manager she always spends more money than she earns. 她不大会理财——总是入不敷出。

Life here is much easier than it used to be. 如今在此地生活比起从前可舒服多了。

比较下面一句,than后的expected为省略结构:

He returned three days earlier than (he was) expected. 他回来得比预料的要早三天。

 

六、后接时间或条件状语从句

若语义需要,有时其后可接when引导的时间状语从句以及if 引导的条件状语从句。如:

You are a little fatter than when I saw you last. 你比我上次见你时胖点了。

Joe carries only nine pounds more than when he was twenty. 乔比他20岁时只重了九磅。

They work better together than if they are alone. 他们一起干比他们单干效果要好。