八年级英语下册(Unit 1 Past and present grammar)课件 (新版)牛津版 课件VIP免费

Present Perfect TenseUnit 1 Past and present 现在完成时1.When did you have breakfast this morning?2. When did you live here?3. How many times have you been to Hong Kong?She had breakfast at 6 o’clock. She has had breakfast.He lived here two years ago. He has lived here for two years.They have been to Hong Kong once .She has had breakfast.她吃过早饭了。They have been to Hong Kong once.He has lived here for two years.他们去过香港一次。他已经住这两年了。现在完成时用法 1 ：现在完成时表动作发生在过去并对现在造成影响。（她现在不饿）用法 2 ：现在完成时表动作发生在过去并一直持续到现在，有可能继续持续下去。用法 3 ：现在完成时表到现在为止某动作发生了多少次。现在完成时的构成现在完成时的构成助动词 have (has ） + 过去分词 (done)They have arrived.主语 主语 + + 谓语谓语（动词过去分词）（动词过去分词）主语 主语 + + 谓语谓语（动词过去分词）（动词过去分词）阅读五个句子，讨论并完成问题1. She has helped the children with their lessons for an hour.2. They have learned English for three years.3. I /we have not told it to him. 4. Jim has not seen the film before.5.Has he finished his homework yet? Yes, he has./No, he hasn’t. 1. 现在完成时结构 肯定： ______+_______+_____ 否定： ______ + ______+______ 一般疑问句：把 ________ 提前 肯定回答 ______ / 否定回答 _______ 2.have not 可缩写成 ____has not 可缩写成 ___现在完成时的基本结构（ 1 ）肯定句：I/We/You/They + 助动词 have + p.p( 过去分词） + 其它。He/She/It + 助动词 has + p.p( 过去分词） + 其它。e.g.We ______________ Xiao Caiqi. (know ） She ______________very popular now. （ become)have knownhas become现在完成时的基本结构 （ 2 ）否定句：e.g.Mr Chen ____________ to any other city yet. ( not move ） The snow _____________ yet. ( not melt 融化）hasn’t movedI/We/You/They+have not / haven’t +p.p( 过去分词） + 其它。 He/She/...