新概念英語第二冊課件Lesson28現(xiàn)在完成時上課課件(共19張PPT)

1、Cacad bccba bb1. First listen and then answer the question.What is Jasper Whites problem?People often park their cars outside his gate so that he cant get his car into his garage.Are there many people who believe in ancient myths?Why cant he get his own car into his garage?How many ways has he come

2、up with to solve this problem? What are they?ReadingAre there many peopoe who believe in ancient myths?No, there arent.2. Why cant he get his own car into his garage?Because someone has parked a car outside his gate when he comes home in the evening.3. How many ways has he come up with to solve this

3、 problem? What are they?Two.The first is to put up “No Parking” signs outside his gate.The second is to put an ugly stone head over the gate.現(xiàn)在完成時 (Present Perfect) 現(xiàn)在完成時用來表示之前已發(fā)生或完成的動作或狀態(tài)，其結(jié)果的確和現(xiàn)在有聯(lián)系。動作或狀態(tài)發(fā)生在過去但它的影響現(xiàn)在還存在；也可表示持續(xù)到現(xiàn)在的動作或狀態(tài)。其構(gòu)成： have (has) +過去分詞比較過去時與現(xiàn)在完成時 1）過去時表示過去某時發(fā)生的動作或單純敘述過去的事情，強(qiáng)調(diào)

4、動作； 現(xiàn)在完成時為過去發(fā)生的，強(qiáng)調(diào)過去的事情對現(xiàn)在的影響，強(qiáng)調(diào)的是影響。 I saw this film yesterday.（強(qiáng)調(diào)看的動作發(fā)生過了。）I have seen this film. （強(qiáng)調(diào)對現(xiàn)在的影響，電影的內(nèi)容已經(jīng)知道了。）構(gòu)成形式： 助動詞 have / has+ 過去分詞肯定式：主語+have / has+ 過去分詞+其他 I have read the book twice.否定式：主語+havent / hasnt+ 過去分詞+其他 I havent been there before. 疑問式：Have / Has+主語+ 過去分詞+其他？ Have you fi

5、nished your homework?現(xiàn)在完成時的構(gòu)成及基本句型 現(xiàn)在完成時的基本用法表示過去發(fā)生或已完成的某一個動作對現(xiàn)在造成的影響或結(jié)果。 - Have you had lunch? - Yes, I have. Ive just had it. 你吃過午飯沒？有，吃過了，我剛剛吃的。（影響及結(jié)果：我現(xiàn)在飽了，不需要了） He has gone to Beijing. 他已經(jīng)去北京了。（影響及結(jié)果：他人現(xiàn)在不在這里了）(2) 表示過去已經(jīng)開始，持續(xù)到現(xiàn)在的動 作或狀態(tài)。該用法常和表示過去某一 時刻延續(xù)到現(xiàn)在的一段時間的狀語連 用，如for 、since等引導(dǎo)的一段時間。 I have

6、been here for three days. 我在這里已經(jīng)3天了。 His father has worked in that factory since 1991. 他爸爸自1991年以來都在這家工廠工作。 1. -He _to the party. -What _to him? He said he would be here by eight oclock. A. hasnt come ;happened B. didnt come; has happened C. isnt coming; had occurred D. hasnt come; has happened 解析:

7、從上下文看，說話人還在等待他的到來因此第一空用現(xiàn)在完成時，第二空是對他迄今情況的推測，也要用現(xiàn)在完成時。 D考點(diǎn)例析2. I _ a letter from him since he left. A. didnt receive B. havent got C. didnt have D. havent heard解析：據(jù)since可知，應(yīng)排除A、C，hear from sb.=receive/get/have a letter from sb.意為“收到某人的來信”，故選B。 BHas bought Has had Has parked Has not been Has putHave not hadHas putHave seenHas turnedHas closed the doorHave gone to bedHas stopped rainingHas had a bathThe picture has fallen down