He ________ carefully,but he didn't ________ anything.大神们帮帮忙A.listened; heard B.listened; hear C.heard; listen D.listen; hear

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/01 00:41:23

He ________ carefully,but he didn't ________ anything.大神们帮帮忙
A.listened; heard B.listened; hear C.heard; listen D.listen; hear

答案B listen强调听的动作;hear强调听的结果.didn't为助动词,其后用动词原形,另外but连接两个一般过去时的句子.故选B. 查看原帖>>