例句：He help his mother clean the room.由此引发的两个问题!
问题描述：
例句：He help his mother clean the room.由此引发的两个问题!
在过去式中,一个句子,不用连词连接,可以有两个过去式吗?例句该怎样改成过去式的呢?是只把help加ed,还是help和clean一起加ed?
在一般现在时中,一个句子,是第三人称单数时,可以两个动词都加s吗?我知道句子中如果有does,另一个动词要原形,可是有两个动词了,该如何?是只把help加s,还是help和clean一起加s?
我个人认为问题一和二的动词都是一个变形,一个原形,
答
He helped his mother clean the room.
he helps his mother clean the room
help sb do sth 都只变一个