疑问词: when(什么时候),where(哪),who(谁), what(什么),how(怎么),howlong(多长时间), how far(多远),how ofen(多...
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疑问词: when(什么时候),where(哪),who(谁), what(什么),how(怎么),howlong(多长时间), how far(多远),how ofen(多...
反身代词: myself(我自己),yourself(你自己),herself(她自己), himself(他自己),itself(它自己),yourselves(你们自己)...
形容词性物主代词: 单数形式:my your his her its one's 复数形式:our your their 后面可以接名词。 This is my book. ...
be动词的形式: be,is,am,are,was,were,being,been 例句: The man is back. They are back. He was ba...