江苏省永丰初级中学八年级英语下册U3 Grammar.ppt

* Revision: 北京因长城作为一个旅游城市而著名。 Beijing ___________________________. 2. 这条河是个钓鱼和放松你自己的极好地方。 This river is a __________________________. 3. 我三天前听说了这件惊讶的事。 I _____________________________________. 4.自从上世纪起，他就已经很出名了。 He __________ ___________________________. 5. 这网站叫做“…” / 找一个叫….的网站 is famous for the Great Wall as a tour city perfect place to go fishing and relax yourself. heard of/about the amazing thing three days ago has been very famous since the last century This website is called ... / search for a website called… Simple past tense present perfect tense Daniel 两年前去了北京。 Daniel went to Beijing two years ago. Daniel 已经在北京居住两年了。 Daniel has lived in Beijing for two years. We use simple past tense to tell what happened in the past. We use the present perfect tense to talk about an action that started in the past and continues to the present. Daniel 上个月买了台新电脑。 Daniel bought a new computer last month. Daniel已经买了台新电脑。 Daniel has bought a new computer. (Daniel has a new computer now.) We use the simple past tense to tell what happened in the past. We use the present perfect tense to talk about the result of an action.When the action happened is not very important. It may have just happened or happened some time ago. 吴老师2010年和2011年访问过加拿大。 Mr Wu visited Canada in 2010 and 2011. 吴老师已经去过加拿大两次。 Mr Wu has been to Canada twice. We use the simple past tense to tell what happened in the past. We use the present perfect tense to tell how many times an action has happened till now. 1) 一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。 2) 现在完成时可表示持续到现在的动作或状态，与延续性的动词连用，如：live, teach, learn, work, study, know。 　若遇到短暂性动词如：come, go, leave, start, die, finish, borrow, get married等，需要转换成延续性状态或动作。 3) 一般过去时的时间状语：yesterday, last week, … ago, in 1980, in October, just now, the other day等，皆为具体的时间状语。 Tips: the other day 相当于a few days ago, 意为“几天前、某天、那天、不久前”，句中用一般过去时。如： I met her in the street the other day. 几天前我在街上碰见过她。 I bought the watch the other day. 这手表我是几天