1. 作表语:介词短语放在系动词之后作表语。
He and I are both in the same class. 我和他在同一个班里。
Lucy looks like her sister, Lily. 蕗茜长得像她的妹妹莉丽。
2. 作状语:介词短语作状语可以修饰动词、副词或整个句子,用来表明时间、地点、原因、方式、目的等。例如:
Class begins at eight in the morning. 早晨八点钟上课。
The Smith family lived in Shanghai. 史密斯一家住在上海。
Because of the rain, he didn’t go to school. 由于下雨,他没有去上学。
They go to work by bike every day. 他们每天骑自行车上班。
3. 作定语:介词短语作定语一般放在它所修饰的名词之后。例如:
The students under the tree are all from Class Four. 大树下的那些同学们都来自四班。
Have you found the key to the door? 你找到那个门的钥匙了吗?
4. 作宾语补足语:初一英语练习题介词短语可放在宾语的后面用来补充说明该宾语。例如:
I left my English dictionary at home. 我把英语词典忘在了家里。
You must keep your hand behind your back. 你应该把手背过去。
注意:用作宾语补足语的介词短语在相应的被动语态中则为主语补足语:
He was regarded as a hero.他被看成是英雄。
5. 作主语:介词短语在句中有时用作主语。例如:
After the exams is the time to relax. 考试后是轻松一下的时间。
Between 6 and 7 is good for me. 六点到七点对我来说较好。