初中英语外研版八年级下册M4U3知识点讲解

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1、八年级英语下册 知识点讲解一、语法:现在完成时（三）（一）表示动作或状态从过去某时开始，一直延续至今，可能刚刚结束，也可能继续下去。常与for或since引导的时间状语（从句）连用。用how long提问，谓语动词用延续性动词。for + 时间段Eg: I lived here for about ten years.我住在这大约十年了。since + 时间点：Eg: We have been very busy since the new term began.我们从新学期开始一直很忙。since + 从句（一般过去时）Eg: I have learnt English since I wa

2、s 5 years old.我从5岁学英语。（二）短暂性动词不能与表示一段时间状语连用短暂性动词变延续性动词的情况：begin(start) - be on; go there - be there;come back - be back; come here - be here;open - be open; close - be close;die - be dead; marry - be married;finish - be over; go to bed - be in bed;leave - be away; return - be back;get out - be out;

3、fall asleep - be asleep;lose - be lost; fall ill - be ill;borrow - keep; put on - wear/ be on;become - be; get to know - know;buy - have (own); receive - have;catch a cold - have a cold;go to sleep - sleepEg: I have borrowed that book for one month.()- I have kept that book for one month. ()我已经借这本书一

4、个月了。瞬间动词可用于现在完成时中，但不可接一段时间。知识讲解1.Have a healthy diet 有健康的饮食Eg: We should have a healthy diet.我们应该有一个健康的饮食。2.In the last three days 在过去的三天里3.For the first time 第一次4.in hospital “住院”强调事情，说明生病了in/ at the hospital “在医院里”强调地点Eg: Her grandma is in hospital now. 他的奶奶正在住院。Lily works in the hospital. 丽丽在医院工作

5、。5.finally = at last 最后Eg: Finally, she arrived there on time.最后，她按时到那了。6.ride a bike 骑自行车7.start doing sth.= start to do sth. 开始做某事Eg: She started learning English at the age of five.她五岁时开始学英语。8.Thats it. 正是如此。9.from time to time 不时；偶尔Eg: Stand up and do some exercise from time to time.偶尔站起来做做运动。10.choose sb.to do sth. 选择某人做某事Eg: I want to choose Lily to be our monitor.我想选丽丽做我们的班长。11.in the past 在过去Eg: I went to school by bus in the past.我过去坐公交上学。12.set up 创建；设立；开办Eg: Our teacher wants to set up a girls football team.我们老师想创办一个女子足球队。13.Develop (动词) “发展；培养”- dev