(
课件网) b1m4 grammar PRESENT PERFECT We haven’t seen such blue sky for few years, for the air has been polluted. present prefect Translate: Somebody has broken the window. We have been in love with each other for years. 已完成 对现在的影响 持续到现在并可能持续下去的状态 Since the 1980s , plenty of forests _____ ( destroy) seriously around the world. has been destroyed It has been a long time since we last _____(see) such clear and blue sky. saw Because of war, a good many people _____ (leave) syria（叙利亚). Now less people are staying there. 点击添加文本 点击添加文本 点击添加文本 点击添加文本 have left 点击添加文本 点击添加文本 点击添加文本 点击添加文本 In the past few years, global warming _____(make) glacier begin melting(融化). It is one of the reasons that the number of penguins _____（drop). This is the first time they _____ (feel) so hopeless for the future. They _____(not be) used to life yet. has made has dropped have felt haven’t been Attracted by the money , a large number of animals already_____ (kill ) . have been killed According to the IUCN, so far 844 kinds of plants and animals _____ (disappear) . have disappeared It has been a long time since we last saw such clear and blue sky. Since the 1980s, plenty of forests have been destroyed seriously around the world. Because of the war, a good many people have left Syria. Now less people are staying there. In the past few years, global warming has made glacier begin melting. It is one of the reasons that the number of penguins has reduced This is the first time they have felt so hopeless for the future. They haven’t used to the changed life yet. Attracted by the money, a large number of animals already have been killed. According to the IUCN, so far 844 kinds of plants and animals have disappeared. 句型 时间状语 already yet just ever never Since +时间点 So far = till/ until now = up to now Context SUMMARY 自从你上次来中国已经三年了 这是我第一次离开家独立生活 _____and lived on my own. 这是我听到的最感人的故事之一 It has been three years since you came to China last time This is the first time that I have left home This is one of the most moving stories that I have ever heard Because of war, a good many people left syria. Because of war, a good many people have left syria. A good many people ____ ____ ____ _____syria for a long time. for a long time 表示曾经离开过叙利亚 一般过去 VS 现在完成 现在不在叙利亚 left 瞬间动词 be away have been away from arrive reach leave buy close fall die lose give join receive borrow become begin start finish marry come go happen 瞬间动词一瞬间便完成了从发生到结束的全过程，所以其完成时不与表达“段”的时间连用.只有变成延续动词方可。 常用的瞬间动词与延续动词转换 leave→be away, borrow→keep, buy→have, begin/start→be on, die→be dead, finish→be over, join→be in/be a member of, marry →be married, fall in love with→ be in love with, catch a cold→have a cold My grandfather has been died for ten yea ... ...
