-Is Jack in the library -Maybe.I saw him( )out with some books just now.为什么不是“went"而是go

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-Is Jack in the library -Maybe.I saw him( )out with some books just now.为什么不是“went"而是go
-Is Jack in the library -Maybe.I saw him( )out with some books just now.为什么不是“went"而是go

-Is Jack in the library -Maybe.I saw him( )out with some books just now.为什么不是“went"而是go
see sb do sth,see后面的动词用原型,固定搭配
因此选择go

see sb. doing/do ,这里只可能用进行时或原型,后边有个just now ,而且是个非延续动词,就只能用go··