Unit 8 Have you read Treasure Island yet
单元语法聚焦八
现在完成时
1．现在完成时的用法
(1)表示过去已经发生或已经完成的动作对现在造成的影响或结果，常与already, ever, before, just, yet, never 等词连用。
(2)表示从过去开始一直持续到现在的动作或状态。
2．现在完成时的结构
肯定句式：主语＋have/has＋过去分词＋其他．
否定句式：主语＋haven't/hasn't＋过去分词＋其他．
一般疑问句式：Have/Has＋主语＋过去分词＋其他？
一般疑问句的肯定回答：Yes, 主语＋have/has.
一般疑问句的否定回答：No, 主语＋haven't/hasn't./No, not yet./No, never. 如：
He has already finished his homework.
他已经完成作业了。
—Has he finished his homework yet?
他完成作业了吗？
—Yes, he has. 是的，他完成了。
—No, he hasn't. 不，他没完成。
3．一般过去时与现在完成时的区别
(1)一般过去时只强调在过去发生过某事或动作发生的时间、地点、方式等。如：
I saw the movie yesterday.
我昨天看了这部电影。(强调这部电影是昨天看的)
(2)现在完成时则强调过去的动作对现在造成的影响。如：
I have already seen the film.
我已经看过这部电影了。 (强调到现在为止看过这部电影了)
( )1.2018·连云港—Look! Somebody ________ the lights.
—Well, it wasn't me. I didn't do it.
A．turns off
B．is turning off
C．was turning off
D．has turned off
( )2.2018·河北I ________ an invitation to the concert. I can't wait to go.
A．receive B．will receive
C．was receiving D．have received
( )3.2018·阜康、米泉—What an exciting march!
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—Yes, isn't it? I ________ such a great one before!
A．never saw B．had never seen
C．never see D．have never seen
( )4.2018·盐城—I ________ my card. I want to report it.
—You can call the bank to report the loss. It would be faster.
A．lose B．was losing
C．will lose D．have lost
( )5.2018·日照—When will you give the novel back to me?
—Sorry, I ________it. How about Friday?
A．didn't finish B．won't finish
C．haven't finished D．don't finish
( )6.2018·沈阳Sarah ________ many places of interest in Beijing already.
A．visited B．has visited
C．will visit D．visits
( )7.2018·呼和浩特Diana can't go to the farm with her classmates because she ________ a bad cold.
A．will catch B．is catching
C．has caught D．is caught
( )8.2017·云南—What do you think of your hometown, Kate?
—It ________ a lot. It's more beautiful than before.
A．has changed B．changes
C．will change D．change
( )9.2017·烟台—Look at my new smartphone.
—Wow, it's so cool. When and where ________ you ________ it?
A．do; buy B．have; bought
C．did; buy D．have; had
( )10.2017·海南Last year our class set up Reading Corner. So far, we ________ more than 200 books.
A．were reading
B．have read
C．will read
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教师详解详析
1．D 2.D 3.D 4.D 5.C 6.B 7.C
8．A 考查动词的时态。答语中的后一句“它比以前漂亮多了”是前一句带来的影响和结果；强调对现在的影响和结果时用现在完成时。故选A。
9．C 考查动词的时态。句意：“看我的新智能手机。”“哇，好酷啊。你何时何地买的？”根据语境可知，这里强调买的时间和地点，应用一般过去时。故选C。
10．B 考查动词的时态。句意：去年我们班建立了阅读角，到目前为止，我们已经读了200多本书了。so far意为“迄今为止”，是现在完成时的标志。故选B。
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