初中英语时态讲解和练习.ppt

10.他说过他以前学过一些英语。? He?said?that?he?had?learned?some?English?before. * 知识回顾Knowledge Review 现在分词的变法有 1)、一般在动词词尾加上-ing ,E.g. jump 2)、以不发音字母e结尾的动词，先去e，再加-ing. E.g have write 3)、.以重读闭音节末尾只有一个辅音字母结尾的词，它前面是单个元音字母时要先将词尾的辅音字母双写，再加上-ing. E.g. sit put 其句式变换都在be上做文章。 1.I ____(write, am writing, is writing, are writing) a letter now. 2.Look, it _____(begin, is beginning, am beginning, are beginning) to rain. 3.They ____(study, is studying, am studying, are studying) medicine at the Medical Institute of Chengde these days. 4.He _____(teach, am teaching, is teaching, are teaching) an English lesson at this time. 5.我妈妈在做家务。 My mother was doing housework. 6.老师正在教我们如何用电脑。 The teacher was teaching us how to use computer. * 过去进行时 1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。 2.时间状语：at this time yesterday, at that time或以when引导的谓语动词是一般过去时的时间状语等。 3.基本结构 主语+was/were +doing +其他 4.否定形式：主语+was/were + not +doing+其他 5.一般疑问句：把was或were放于句首。(第一个字母大写） 其句式变化仍然要在be上做文章。 1.I _____(cook, cooked, was cooking, were cooking) breakfast when you arrived. 2.What ____you_____( do, did, was...doing, were…doing) at this time yesterday evening? 3.We_____(have, are having, had, were having) dinner when the doorbell rang. 4.While/ When/ As we____( have, had, are having, were having) dinner, the doorbell rang. 7. 昨天下午四点你们在打篮球吗？ Were?you?playing?basketball?at?four?yesterday?afternoon? 8.他看书时睡着了。 ?He?fell?asleep?when?he?was?reading.? * 一般将来时 构成:①will,shall+动词原形，其中shall只用于第一人称。 ②be going to +动词原形，表示主观打算，按计划，安排要发生的事情。 ③be to +动词原形，表示客观安排 ④ be about to +不定式，意为马上要做某事，正要做某事。(不可与副词连用） ⑤某些动词，可用进行时态表将来，如come, go, arrive, leave。 ⑥在时间状语从句和条件状语从句中，主句用一般将来时(will+动词原形)，从句中用一般现在时表将来。 否定形式：主语+am/is/are not going to do ；主语+will/shall not do+其他 一般疑问句：be放于句首；will/shall提到句首。 e.g. She will be back in three days. She will not be back in three days. Will She be back in three days? 1 _____you ____a doctor when you grow up? A Will; going to be B Are; going to be C Are; / D Will; be 2 I don’t know