1、六、过去进行时的用法 （1）过去进行时表示过去某一时刻正在进行的动作。一般和过去的特定时间状语或状语从句连用。 如：then, at that time, at eight yesterday, this time yesterday, when he came in等。 I was playing volley-ball this time last Sunday. 上周日的这个时候我正在打排球。 Li Fang was watching TV when her father c
2、ame back. 李芳的爸爸回来时她正在看电视。 （2）过去进行时表示过去某段时间是持续进行的动作。 They were making ships last month.他们上个月正在造船。 （3）go, come, leave等瞬间动词的过去进行时表示过去某一时间安排或计划好的即将发生的动作。 The plane was arriving at eight.飞机八点到达。 过去进行时与一般过去时的区别 过去进行时表示过去某一动作正在进行，强调“动作的连续性”，而一般过去时则表示一
3、个做完的动作，强调“有过这件事”。 I was playing chess last night.昨晚我在下棋。 I played chess last night.昨晚我下棋了。 My father worked last Sunday. 我爸爸上周日工作了。 My father was working last Sunday. 我爸爸上周日在工作。 七、现在完成时的用法 （1）强调不久前完成的动作对现在产生的影响，常与already, just, yet等副词连用。 I have
4、just read your letter.我刚刚读完你的信。 He has already come back.他已经回来了. （2）表示过去发生的动作一直持续到现在。常与for或since引导的一段时间状语连用。for后通常跟 一个时间段，而since后只能跟一个具体的时间点。 for two weeks持续两周时间；since Monday自从周一 He has lived here for three years.他在此住了两年了。 I have been here
5、since 1976.自从1976年我就一直在这里。 Exercise: 用since和for填空 1. Jim has been in Ireland ______ Monday. 2. Jill has been in Ireland ______ three days. 3. His aunt has lived in Australia ______15 days. 4. Mary is in her office. She has been there ______ 7 o'clock. 5. India
6、 has been an independent country ______1974. 6. The bus is late. They've been waiting ______ 20 minutes. 7. Nobody lives in those houses. They have been empty ______ many years. 8. Mike has been ill ______a long time. He has been in hospital ______ October. 1.
7、 since 2. for 3. for 4. since 5. since 6. for 7. for 8. since 瞬间动词及注意要点： a. 现在完成时的肯定句，其谓语动词如果是瞬间动词，如come, go, begin, join等，则不可与表示一段时间的状语连用。 如：他到此两周了。 He has arrived here for two weeks.（×）此时需转换表达方式： ①用ago代替for，并改为一般过去时。 ② 用延续性动词代替瞬间动词。
8、 ③ 用It is/It has been„since„句型。 所以上面的句子可转换为： ① He arrived here two weeks ago. ② He has been here for two weeks. ③ It is/ It has been two weeks since he arrived here. b. 当瞬间
