你这是个经常问到的问题
除了曾老师讲的外,我补充一点:
指定(如离开)时间问题
1A. The train leaves at 7:30.
2A. The train will leave at 7:30.
3A. The train is leaving at 7:30.
1B. He will leave at 7:30.
2B. He is leaving at 7:30.
3B. He leaves at 7:30.
这些句子对吗?
答:1A,2A,3A在日常口语中意思一样,都等于2A ; //
1B, 2B意思相同,3B不常用,但也不错。正规语体用will的好些。下面配上点语境:
1 When will he leave? --- He'll leave at 7:30.
2 When is he leaving? --- He's leaving at 7:30.
3 When does he leave? --- He leaves at 7:30.
◎ 正常情况,3B表惯常的行为。但如果用在7:30之前,这句子碰巧就有表将来的作用,虽然会显得答非所问: 1 When will he leave? He (usually) leaves at 7:30.