【初二英语】【单选】All the students were sweeping the floor____they heard a man ____ “help”.All the students were sweeping the floor____they heard a man ____ “help”.A.when,shouting B.while,to shout C.when,to shout D.while,shouting
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【初二英语】【单选】All the students were sweeping the floor____they heard a man ____ “help”.All the students were sweeping the floor____they heard a man ____ “help”.A.when,shouting B.while,to shout C.when,to shout D.while,shouting
【初二英语】【单选】All the students were sweeping the floor____they heard a man ____ “help”.
All the students were sweeping the floor____they heard a man ____ “help”.
A.when,shouting
B.while,to shout
C.when,to shout
D.while,shouting
【初二英语】【单选】All the students were sweeping the floor____they heard a man ____ “help”.All the students were sweeping the floor____they heard a man ____ “help”.A.when,shouting B.while,to shout C.when,to shout D.while,shouting
A.when,shouting
1.when = 就在这个时候（突然）；
2.hear sb shouting help 听到某人在大喊救命
3.所有的学生都在扫地,突然听到有人喊救命.
选D,前后两个doing，用while
A
sb was doing sth when表示某人正坐某事突然发生某事
D吧~~while表示两者同时发生的动作。