英语八年级上册Section A集体备课课件ppt
展开Sectin A 3Grammar fcus-4c
Read the fllwing sentences we have seen.
Have yu read Little Wmen yet? Yes, I have./ N, I haven't. Has Tina read Treasure Island yet? Yes, she has. She thinks it’s fantastic.Have yu decided which bk t write abut yet?Yes, I have. I’ve already finished reading it. It was really gd.
用法1. 表示过去发生或已经完成的某一动作 对现在造成的影响或结果。 e.g. –Have yu had yur lunch yet? –Yes, I have. I’ve just had it. (现在 我不饿了。)2. 表示动作或状态从过去某一时刻开始,一直延续到现在,而且可能还要继续下去。
e.g. I haven’t seen her these days. I’ve knwn Bb fr three years. I’ve been at this schl fr ver tw years.
时间状语already, yet, just, ever, never, befre
构成现在完成时是由“助动词have / has+ 动词的过去分词”构成的,规则动词的过去分词构成与过去式相同,不规则动词的过去分词则需逐个记忆。
动词的过去式的变化和过去分词的变化并不完全相同。我们对它们作了一个大致的分类。 (注:例子中单词的变化顺序为:动词原形 → 动词的过去式 → 动词的过去分词)
一、过去式和过去分词的变化相同规则变化:1. 一般在动词词尾直接加ed。如: pick → picked → picked; wish → wished → wished; stay → stayed → stayed2. 以不发音的e结尾的动词后面加d。如:like → liked → liked; hpe → hped → hped; phne → phned → phned
3. 以“辅音字母 + y”结尾的动词,变y为i,再加-ed。如: study → studied → studied; hurry → hurried → hurried; reply → replied → replied4. 词尾只有一个辅音字母的重读闭音节动词,要双写辅音字母,再加-ed。如:stp → stpped → stpped; clap → clapped → clapped
不规则变化:5. 以不变应万变。如: let → let → let; put → put → put; read → read → read6. 若中间有双写e,则去掉一个e,单词末尾再加t。如: feel → felt → felt; keep → kept → kept; sleep → slept → slept
7. 结尾的字母d变t。如: lend → lent → lent; build → built → built; send → sent → sent8. 变为以-ught或-aught结尾。如: buy → bught → bught; bring → brught → brught; catch → caught → caught; teach → taught → taught
句式1. 肯定句:主语 + have / has + 过去分词 (+ 其他)2. 否定句:主语 + have / has + nt + 过去 分词(+ 其他)3. 一般疑问句:have/ has + 主语 + 过去 分词(+ 其他)
4. 特殊疑问句: 特殊疑问词 (不是句子主语) + have / has + 主语+过去分词 (+ 其他)2) 特殊疑问词(是句子主语)+have / has+ 过去分词(+ 其他)
already和yet都可以作为现在完成时的标志词,但它们的用法不同。◆already一般用于肯定句中。如: We have already cleaned up ur classrm. 注意:already用于疑问句中时通常表示惊奇。如: Have yu finished yur hmewrk already? I can’t believe it.
◆yet一般用于疑问句和否定句中。如: Have yu seen her yet? The bus hasn’t cme yet.
1. Write the frms f the past tense and past participle: drink ______ ______ see ______ ______ find ______ ______ leave ______ ______ tell ______ ______
drank drunk
saw seen
fund fund
left left
tld tld
—Why is Mr. Yang still in the teachers’ ffice? —Maybe he ________ his wrk yet. A. desn’t finish B. hasn’t finished C. haven’t finished
4a Use the wrds in brackets t cmplete the cnversatins.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.
I have just drunk sme tea
Have yu fund it
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)
He has already left
did he leave
She has already seen the film
5. A: What d yur parents think abut ur plan? B: I __________________. (nt/ tell them/yet)
haven’t tld them yet
4b Fill in the blanks with the crrect frms f the wrds in the brackets. 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.
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
4c Cmplete the chart with infrmatin abut yu and yur friend.
A: What bks have yu already read?B: I have 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.
( )【2013广西贵港】 —D yu knw the mvie Lst in Thailand? —Yes. I ______ it twice. It’s funny. A. saw B. see C. have seen D. will see
( )【2013黑龙江牡丹江】 —Lunch? —N, thanks. I__________. A. will eat B. am eating C. have eaten( )【2013 湖北黄冈】 —Where is Tm? We can’t find him anywhere. — Perhaps he _____ hme. A. has cme B. is ging C. went D. was ging
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