英文造句:be(am,is,are),Do/does/Did,Have/has答:在主语I的时候,be动词用am,在主语为 He,She的时候,be动词用is,在主语为2个人以上的时候(例:we,they),be动词用are.I am playing bastetball now.He/She is doing his homework.We/They are good friends.同理,在主语为I的时候,用do和have,在主语为He/she的时候,用has和does.(have的过去式...