英语八年级下册Section A优秀课件ppt

这是一份英语八年级下册Section A优秀课件ppt，文件包含人教英语八下Unit8第三课时SectionAGrammarFocus-4cpptx、ThePresentPerfectmp4等2份课件配套教学资源，其中PPT共30页， 欢迎下载使用。

Learning gals
1. Wrds & Expressin: fictin, science fictin, technlgy, French
2. Grammar: 现在完成时：① 现在完成时态的构成 ② 过去分词的构成 ③ 现在完成时的两种用法 ④ already 和 yet 的用法区别 ⑤ 现在完成时和一般过去时的用法区别
3. Sentences: ① Have yu read Little Wmen yet?Yes, I have./N, I haven’t.② Has Tina read Treasure Island yet?Yes, she has. She thinks it’s fantastic.③ Have yu decided which bk t write abut yet?Yes, I have. I’ve already finished reading it. It was really gd.
A shrt vide t understand the present perfect.
Grammar Fcus
Find the present perfect tense.
Hw is the present perfect tense frmed?
have/has + 过去分词
What adverbs are ften used with the present perfect?
Already and yet.
含现在完成时的句子如何构成一般疑问句？
将助动词have/has放在主语之前。
一、现在完成时的基本结构现在完成时由“助动词 have/has + 过去分词”构成，其基本句式结构为：① 肯定句：主语 + have/has + 过去分词 + 其他.I have seen this film.② 否定句：主语 + have/has nt + 过去分词 + 其他.I have nt seen this film.③ 一般疑问句：Have/Has + 主语 + 过去分词 + 其他?肯定回答：Yes, 主语 + have/has. 否定回答：N, 主语 + haven’t/hasn’t.— Have yu seen the film? —Yes, I have. / N, I haven’t.
Presentatin
have nt = haven’t; has nt = hasn’t
have/has 常可缩略为 -’ve/-’s
二、过去分词的构成1. 规则变化（与动词过去式规则一样，此类称作规则动词）
-ed 的读音规则：① 在元音或浊辅音后读 [d]，如 tried [trad]，lived [lvd]。② 在清辅音后读 []，如 wrked []，stpped [ɒ]。③ 在[][d]后读[d]，如 mended [mendd]，wanted [wɒntd]。
2. 不规则变化（此类称作不规则动词，有很多）
三、现在完成时的用法1. 表示过去发生或已经完成的动作对现在造成的影响或结果。常和 just（刚刚），already（已经），yet（还，仍然），ever（曾经），never（从未），befre（以前），s far（到目前为止）等连用。— Have yu had yur breakfast yet? — Yes, I have. I’ve just had it. — Have yu ever heard this sng?— N. I’ve never heard it befre.Julia has cllected ver 100 beautiful hair clips s far.
现在完成时用法1：表示过去发生或已经完成的动作对现在造成的影响或结果；
I had breakfast.
I’m nt hungry nw.
I have already had breakfast.
（早餐过去吃的，现在不饿。）
2. 现在完成时还可以表示过去某一时间开始并一直持续到现在的动作或状态，常与“fr + 时间段”或“since + 时间点 / 从句”连用，这时要用延续性动词。They have wrked in this cmpany fr 30 years.He has been in the army since 2016.（错：He has jined the army since 2016.）【特别提醒】如果要对 fr 或 since 短语提问，疑问词用 hw lng。— Hw lng have yu lived in this area?— Fr at least 10 years.
现在完成时用法2：表示过去某一时间开始并一直持续到现在的动作或状态。
I mved here in 1990.
I still live here.
I have lived here fr 30 years.(30年来一直生活在这里）
三、already 与 yet 在现在完成时中的用法解析
四、现在完成时 VS. 一般过去时现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况，因此不能和表示过去的时间状语连用。I have already dne my hmewrk.（不能用last night等）I’ve been t Paris befre.（不能用last year等）2. 一般过去时只表示过去的动作和状态，与现在无关。可以和表示过去的时间状语连用。I did my hmewrk last night.When did yu g t Paris? （when 一定不要和现在完成时连用）
3. 日常对话中通常两种时态配合使用，开始提到一件事做没做或发生过时用现在完成时，说起这件事具体情形时用一般过去时。— Have yu been t Japan?— Yes, I have. I went there last year.— Wh did yu g with?— …
1. A: Wuld yu like smething t drink? B: N, thanks. ________________________. (just / drink sme tea)2. A: I heard yu lst yur key. _______________________? (find) B：N, nt yet.
Tip: Find the key wrds t identify which tense t use.
I’ve just drunk sme tea
Have yu fund it yet
3. A: D yu knw when Tm is leaving? B: ________________________________. (already / leave) A: When _____________________? (leave) B: This mrning.4. A: Is yur sister ging t the mvies with us tnight? B: N. ___________________________. (already / see the film)5. A: What d yur parents think abut ur plan? B: I _____________________________. (nt / tell them / yet)
He has already left
did he leave
She has already seen the film
have nt/haven’t tld them yet
Sally ______(lve) reading. In the mrning, she reads the newspaper and in the evening she reads bks. She ______ already _______(read) mre than 100 different bks! Her favrite kind f bks is science fictin. She is interested in science and technlgy and lves t imagine what the wrld _________(be) like in 50 years.
fictin n. 小说 science fictin 科幻小说（或影片等）
She ________ (finish) reading a bk abut rbts last week and _________ (write) a bk reprt abut it next week fr her French class. Every time she is in the library, Sally lks at the many bks she ____________(nt read) yet and she can’t wait t read them!
hasn’t read
can’t wait t d sth.迫不及待做某事
A: What bks have yu already read?B: I’ve already read Tm Sawyer and Harry Ptter.A: What d yu think f them?B: Well, I think Harry Ptter was exciting, but Tm Sawyer was a bit bring.
1. First fill in the first clumn accrding t actual situatin.2. Then wrk in pairs asking and answering t fill the secnd and the third clumns. 3. Nw write a shrt paragraph using the infrmatin in the table and reprt t class.
Example:I’ve already read the bk ____. I think it’s ____. My friend ____ has read a bk called ____. He/She thinks it’s ____ and he/she …
Instructins n 4c:
（安徽中考）— It’s ten years since we came here.— Hw time flies! We _____ in China fr s lng.A. wrk B. wrked C. will wrk D. have wrked（贵阳中考）Tday, all the erhu masters play and praise Erquan Yingyue. It _____ ne f China’s natinal treasures.becmes B. became C. has becmeMiss Brwn, we _____ cleaning ur classrm. Can we g hme nw?A. finish B. finishing C. are finishedD. have finished
— Yur new watch is s nice! When did yu buy it?— In April. I______ it fr tw mnths. A. have hadB. hadC. have bughtD. bught— Has yur sister finished reading ________?— Yes. She has________ finished.A. yet; yetB. yet; already C. already; yetD. already; already
She __________(nt read) the bk yet.________ yu ________(decide) which bk t buy yet?Tm wn't g t the cinema with us because he ________ already ________ (see) the film.David hasn't ________(finish) ________(read) Harry Ptter yet.We ________ just ________(clean) the classrm.I ________(lend) my bike t her yesterday, but she ____________ (nt give) it back t me yet.
二、用所给单词的适当形式填空。
hasn’t given
三、按要求改写句子，每空一词。
She has already written the music. (改为一般疑问句) ________ she written the music _______?They studied English 2 years ag. (用 since 2 years ag 改写)They ______ ________ English since tw years ag.Has Tm helped his parents yet ? (作出肯定回答) _______, _____ _______.
have studied
Yes he has
The three students have been tgether fr 3 hurs. (对画线部分提问) ___________ ____________ have the three students been tgether?She has already gne t England. (改为否定句)She _____________ gne t England _____________.He hasn't cme t schl because he's ill. (对画线部分提问)_____________ _____________ he cme t schl?
Hw lng
Why hasn’t
Wrds & Expressin