初中英语人教新目标 (Go for it) 版八年级下册Section B多媒体教学课件ppt

这是一份初中英语人教新目标 (Go for it) 版八年级下册Section B多媒体教学课件ppt，共21页。PPT课件主要包含了Have a try，现在完成时结构，Practice，现在完成时考点解读，现在完成时的时间状语等内容，欢迎下载使用。
一般过去时与现在完成时之比
I wrk in this city.I wrked in this city last year.
They live in Shanghai .They lived in Shanghai last year.
一般过去时的动词过去式的写法：
1、一般情况，在动词末尾加ed
2、动词以e（不发音）结尾的，直接在词尾加d
3、I study in Beijing. I studied in Beijing last year .
study,cpycry , fly...
4、She stps. She stpped.
辅音加y结尾，变y为i加ed
重读闭音节结尾，双写词尾字母加ed
5、特殊记忆 I g t schl by bike every day. I went t schl by bike yesterday. 例如：am/is—was cme--came
e.g. I/He have/has(already) wrked here fr 20 years. -否: I/He haven't/hasn't wrked here fr 20 years(yet). -疑: Have/Has yu/he wrked here fr 20 years(yet)? 肯:Yes,I/he have/has. 否:N, I /he haven't/hasn't.
1. 肯定句:主+助动词have (has)+already＋V.过分2. 否定句：主+haven’t（hasn’t）＋V.过分(yet)?3. 疑问句：Have/Has ＋主语＋V.过去分词(yet)? 肯定回答：Yes, …have (has). 否定回答：N, …haven’t (hasn’t). 连用时间状语：already, yet, ever, never, just, befre, several times 等。
现在完成时的基本句式：
. I saw this film yesterday. 只说明动作发生在过去。 I have seen this film. 强调对现在的影响，电影的内容已经知道了。　 . She returned yesterday. 她是昨天回来的。 She has returned frm Paris.她已从巴黎回来了。 . I went there last mnth.是上个月去的。 I have just been t Lndn. 我刚去过伦敦。
注意：句子中如有一般过去时的时间副词（如 yesterday, last week, in 1960）时，不能使用现在完成时，要用过去时。例如：（ ）Tm has written a letter t his parents last night.（ ）Tm wrte a letter t his parents last night.
1. Hw ______(be) Jim’s weekend? It (be nt ) bad.2. A: Have yu ______ (see) the rbts at the science museum? B: Yes, I ______ (g) there last weekend.3.I ______(see) him in the library tw days ag.
I.用括号中所给单词的适当形式填空。
was nt
4.I ________ just ___________ (finish) my far I _______________(make) quite a few friends lng ________ yu _________(stay) here ? Fr tw weeks.7.I __________ (nt hear) frm her these days.
haven’t heard
have nt (haven’t)has nt (hasn’t)
Have … ?Has … ?
1、现在完成时的构成：
Yes, … have/has.N, … haven't/hasn’t.
have / has + vt. 过去分词(PP)
3、现在完成时的两种主要用法
1.过去发生的动作对现在造成的影响或结果。
2.过去已经开始，持续到现在的动作或状态。
had breakfast
I have already had my breakfast.
I’m nt hungry nw
mved herein 2009
I still live here
I have lived here fr three years.
I have lived here since 2009/three years ag.
考点运用与知识再现——基本概念
1、Bth  his  parents  lk  sad .Maybe they  ______what's  happened  t  him .A.  knew  B.  have knwn  C.  must knw  D. will knw2.Yu dn’t need t g ut t buy fd. I _______sme fd nline.rder B. rdered C. have rdered D. will rder3.She’s put her car in the garage, ____she?A. is B. has C. isn’t D. hasn’t4.This stry is very interesting. I_________ (read) it twice already.5. -____Tm _____(find) his pen yet? -N, he ______.
考点运用与知识再现——时间状语
1、He  has  _______ been  t  Shanghai , has  he ?　　Ａ.  already   Ｂ.never    Ｃ.ever    Ｄ. Still2、The famus writer _____ ne new bk in the past tw years.　　Ａ. is  writing    Ｂ.was  writing    Ｃ.wrte  Ｄ.has  written 3、Zha Lan ______already  ______in this schl fr tw years . Ａ. was ; studying                   Ｂ. will ; study　　Ｃ. has ; studied                     Ｄ. are ; studying4、We ______ Xia  Li  since  she  was  a  little  girl .　　Ａ. knw   Ｂ.  had  knwn   Ｃ. have  knwn   Ｄ.  knew 5、Harry Ptter is a very nice film .I_______ it twice .　　Ａ.  will  see     Ｂ.  have  seen     Ｃ.  saw   Ｄ.see
现在完成时的时间状语分为四类1、与already , just (刚好,正好）， ever , never , befre ,yet 连用。2、与recently , s far ,in the past /last few years ，tday 等时间状语连用。3、与带fr和since 的时间状语连用。4、与 nce ,twice , three times ,several times 等表重复次数的词语连用。
1. I’ve knw Li Lei _____ ten years.2.I have lived here _____ 2002. 3.The meeting has been n ____ an hur has taught us ______I came t the ’s abut ten years ______ he left his hme.
Fill in the blanks with “since” and “fr”.
1.fr+时间段2.since+时间点（过去）3.since+一段时间+ag=fr+时间段4.since+从句（常用一般过去时）5.It’s+一段时间+since(过去时的句子)
since 和fr 用法小结：