d 这里有被动语态 玛丽在派对上被听到唱了很多歌曲.be done 被动语态
hear sb do sth 这个词组变成被动时 注意：be heard to do sth...
Mary ____ many songs at a party.
Mary ____ many songs at a party.
A.heard sing B.heard to sing
C.was heard sing D.was heard to sing
A.heard sing B.heard to sing
C.was heard sing D.was heard to sing
英语人气：459 ℃时间：2019-12-19 01:17:16
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