英汉互译：让我们邀请几个朋友来和我们在一起let`s invite —— —— ——to come with us.1.

英汉互译：
让我们邀请几个朋友来和我们在一起
let`s invite —— —— ——to come with us.
1.his mother often makes him(watch)TV after supper.
为什么watch用原型?
2.I think(it)interesting to work in the fields.
为什么用it不能用that?
3.(though)he is rich,()he is not happy.
为什么后面一空不能填but?
4.Jack(beat)all the runners yesterday.
为什么用beat,不用beats?