[析] 在英语中,当一名词作定语修饰另一名词(单或复数形式)时,作定语的名词一般要用其单数形式;但当man, woman作定语修饰可数名词复数形式时,要用其复数形式men, women。

2. 房间里有多少人

[正] How many people are there in the room?

[析] people作“人、人们”解时,是个集合名词,其单复数同形。

3. 我想为我儿子买两瓶牛奶。

[正] I want to buy two bottles of milk for my son.

[析] 表示不可数名词的数量时,常用“a / an或数词 +表量的可数名词 + of + 不可数名词”这一结构, 其中当数词大于1时,表量的可数名词要用其复数形式。

4. 这是那对双胞胎的房间。

[正] This is the twins’ room.

[析] 以字母以 s结尾的普通名词的所有格只在其后直接加“ ‘”构成即可。

5. 在小轿车里的那位女士是彼得和汤姆的妈妈。

[正] The lady in the car is Peter and Tom’s mother.

[析] 表示几人共同拥有某人或某物时,只在最后一个人名后加“’s”;若是几人分别拥有某人或某物时,则在每个人名后分别加“’s”。

[第二类] 动词类

6. 你妹妹通常什么时候去上学?

[误] What time does your sister usually goes to school?

[正] What time does your sister usually go to school?

[析] 借助助动词do(或does)构成疑问句或否定句时,句中的谓语动词用其原形。

7. 琳达晚上经常做作业,但今晚她在看电视。

[正] Linda often does her homework in the evening, but this evening she is watching TV.