英语语法错点大全（一）

3. 这是非限制性定语从句吗

If a book is in English, ______ may mean slow progress for you.

A. that                     B. which                   C. as                        D. and it

此题应选 A。容易误选 B。许多考生一看到空格前的逗号, 就想当然地认为这是非限制性定语从句, 从而误选了B。

考生可以想一想, 假若此题选B(which), which 用以引导一个非限制性定语从句, 而其前又是一个以if 引导的条件状语从句, 那么请问：此句的主句在哪里?

通过以上分析我们可以知道, 既然本句前面有一个条件状语从句, 那么后面一句就应该是主句。本题选that, 即为主句主语, 全句意为：如果一本书是用英语写的, 那么那就意味着你要读得慢些。

注意：当从句位于主句之前时, 千万不要在主句前误加并列连词或误认为是某种从句。请做以下单选题：

1. When he was tired, ____ he had a rest.

A. and                      B. but                       C. so                        D. ×

2. Because he got up too late, ____ he missed the train.

A. so                        B. but                       C. and                      D. ×

3. Though he is poor, ____ he is happy.

A. and                      B. so                        C. but                       D. ×

5. As is known to us all, ____ China was liberated in 1949.

A. and                      B. but                       C. which                   D. ×

答案：1. D 2. D 3. D 4. D 5. D

4. 这个情态动词后要接动词原形吗

He tried his best and did what he could ______ us.

A. help                     B. to help                 C. helping                D. helped

此题应选B。容易误选A。简单地认为：在情态动词后永远要用动词原形。

其实这是一个省略句, 若把句子补完整应为：

He tried his best and did what he could do tohelp us. 他竭尽全力, 做了他所能做的一切来帮助我们。

从上句可以看出：句中的不定式(to help us)是用作目的状语的, 而不是与情态动词(could)一起构成谓语。

请比较以下几句：

1. He ran as fast as he could ____ the early bus.

A. to catch                B. catch                    C. catching               D. caught

2. He ran as fast as he could _____ to catch theearly bus.

A. to hope                 B. hope                     C. hoping                  D. hoped

3. He spent every minute he could _____ spoken

English.

A. practise                B. to practise

C. practising              D. practised

第1题应选 A。其中的不定式短语 to catch the earlybus 用作目的状语。

第2题应选 C。其中的现在分词短语 hoping to catchthe early bus 用作伴随状语。

第3题应选 C。其中的动名词短语 practising spokenEnglish 与 spent 有关(spend... [in] doing sth. )