牛津譯林版八年級英語下冊《Past and Present》PPT課件(第4課時)，共18頁。
Present perfect tense 現(xiàn)在完成時
1．含義：
(1) 表示過去發(fā)生的事持續(xù)到現(xiàn)在；
(2) 表示過去發(fā)生的事情對現(xiàn)在產(chǎn)生影響。
eg：Mr Wang has lived here since he came to Anhui.
自王先生來到安徽，他就住在這兒了。
I have lost my mobile phone. 我的手機丟了。
2．構(gòu)成：have/ has(＋not)＋動詞的過去分詞。
eg：He has not returned the book to me yet.
他還沒有把書還給我。
She has never seen this film.
她從沒看過這部電影。
3. 動詞的過去分詞
a.一般直接在詞尾加ed
b.以不發(fā)音的字母e結(jié)尾的詞直接加d
c.以“輔音字母＋y”結(jié)尾的詞，變y為i，再加
d.以“元音字母＋y”結(jié)尾的詞，直接加ed
e.以“元音字母＋一個輔音字母”結(jié)尾的重讀閉音節(jié)詞，先雙寫這個輔音字母，再加ed
4．常用時間狀語：
just 剛剛；
yet 用于疑問句，表示“已經(jīng)”，用于否定句表“還”；
ever 曾經(jīng)；
already 用于陳述句，表示“已經(jīng)”，否定句中改為yet；never 用在句中表示否定，從未，從不；
recently 近來，最近。
一、用所給詞的適當形式填空
1. I ___________(study) in America for over three years.
2. The young man __________(live) alone since he graduated from college.(蘭州)
3. This is the best film that I __________(see) so far.
4. —Hello. Can I speak to Miss Brown?
—Sorry, she __________( fly) to Canada already. She'll be back in a week.
5. In the past two weeks, the artist __________(draw) many pictures about his hometown.
6. I __________( know) Jimmy for over two days and now we are good friends.
7. —Why are the windows so dirty?
—Because we _____________( not clean) them for a long time.
8. My life __________( change) a lot in the past few years.(棗莊改編)
二、單項選擇
9. —Dave，we will leave in 10 minutes. Are you ready?
—No，I________ our guidebook and towels yet.(玉林)
A. don't pack B. didn't pack
C. have packed D. haven't packed
10. The singers ________ many concerts in the countryside since 2001.(湘潭)
A. hold B. held C. have held
11. —Have you finished your homework?
—________. Just half of it. How about you？(蘇州)
A. Not at all B. Not likely
C. Not a bit D. Not yet
12. Ann is a nurse in our hospital. She______ here for ten years.
A. works B. has worked
C. worked D. was working
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關(guān)鍵詞：《Past and Present》PPT課件免費下載，.PPT格式
