介词后面是加主语的宾格,应在主动变被动中,在主动变被动中,主语变成by的宾语,原先是主格代词要变成宾格代词。
介词的基本用法:
1、后跟名词:atschool在上学,inperson亲自, on duty值班,atwork在上班,byhand用手, with pleasure乐意等。
2、后跟代词:I'm on it 我来办,stand byhim站在他身边,few ofthem他们中的少数几个,part ofit其中一部分,depend on you指望你。
3、后跟动名词:do wellin dancing擅长跳舞,be good at swimming 擅 游泳,how about going traveling 去旅行怎么样 爱骑行。介词短语在句子中的语法功能是:1.定语.如:The key to the door is missing.2.状语.如:They are playing basketball on the playground.3.表语.如:Japan is to the east of China.4.宾语补足语.如:We consider education of great importance.5.主语补足语.如:These machines must be kept in good cindition