HE ( ) in the classroom just now.he ( )be there now为什么答案是WAS HEARd TO SING , may 而不是was heard sing ,must
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HE ( ) in the classroom just now.he ( )be there now为什么答案是WAS HEARd TO SING , may 而不是was heard sing ,must
HE ( ) in the classroom just now.he ( )be there now
为什么答案是WAS HEARd TO SING , may 而不是was heard sing ,must
HE ( ) in the classroom just now.he ( )be there now为什么答案是WAS HEARd TO SING , may 而不是was heard sing ,must
hear sb do sth/doing sth 的被动语态为:be heard to do sth/ be heard doing sth.所以前半句选be heard to do.
前一句话的意思是刚才听到他在教室里唱歌.后一句的意思是:他现在可能在那(即教室里).因为刚才还在教室里唱歌,但现在可能在教室里,但也可能已经出去了.所以后半句用may(可能)而不用must(一定).
1、主动语态中,hear只能接不带to的不定式或动名词,即:
hear sb do sth/hear sb doing sth;
被动语态中,不定式前面要加to,即
be heard to do sth/be heard doing sth。
2、根据句子意思,刚才在教室唱歌,但是现在不一定在了,所以用may(可能),而不是must(一定)。...
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1、主动语态中,hear只能接不带to的不定式或动名词,即:
hear sb do sth/hear sb doing sth;
被动语态中,不定式前面要加to,即
be heard to do sth/be heard doing sth。
2、根据句子意思,刚才在教室唱歌,但是现在不一定在了,所以用may(可能),而不是must(一定)。
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