指的是第三人称单数(动词),一般是在动词后面加S或加ES,例如 You father usually reads book."read"变成了"reads".当然这局限于所要修饰的是第三人称.例如 they he she it.还有提问时"拆开来",写成助动词加动词原形,例如 What does your father usually do?
第2个回答 2007-04-24
就是跟在第三人称单数(HE SHE IT)后面的动词在一般现在时的条件下要加S如 He often plays basketball.
第3个回答 2007-04-24
动词的第三人称单数形式,例如: I have she/he has we have本回答被提问者采纳