time for后面加什么形式

for 是介词，其后要跟名词，当后面出现动词时就需要变形为动名词ing形式其实这是介词类的普遍规律用法，其他介词还有about,in,on,at,from,off等等。同一句话 ”到吃晚饭时间了”可以说Its time for supper.

他把晚饭吃的东西都吐了出来。

He had vomited up his supper.

晚饭后，他喜欢躲到书房里去。

After dinner he likes to retire to his study.

晚饭后，我绕着城溜达了一圈。

After dinner, I took a stroll round the city.

他们希望晚饭后紧接着开始。

They wish to begin immediately after dinner.

晚饭前我要去梳洗打扮一番。

I\'ll just go and freshen up before supper.