Question

【题目】Mary _______ the song at a party.

A. heard sing B. was heard sing

C. heard to sing D. was heard to sing

Answer 1

【答案】D

【解析】句意：有人听到玛丽在晚会上唱这首歌。考查被动语态。主语Mary是动词hear的受动者，需用被动语态，即be+过去分词结构，可排除AC选项。hear sb. do sth.听见某人做某事，在被动结构中需将省略的不定式符号to恢复，根据句意结构，可知选D。