英语现在完成时巩固练习题6(含讲解)
新概念英语3、4册连读 巩固+提升 1.Hurry up!The play __________ for ten minutes . A.has begun B.had begun C.has been on D.began 解析:现在完成时中,非延续性动词不能与for和since引导的表示一段时间的状语连用,通常是用相应的延续性动词来代替。故应为C 2. -______ you ______anywhere before? -Yes, but I can't remember where I______ A. Did; surf; surfed B. Have; surfed; surfed C. Did; surf; have surfed D. Have; surfed; have surfed 解析:据before可知,应用现在完成时,故选D。 3.The number of the students in our school _______ 1200. A is added up to B has been added up to C adds up to D have added up to 解析:D 4.Harry Potter is a very nice film .I_______ it twice . A. will see B. have seen C. saw D.see 解析:现在完成时还与once(一次),twice(两次),three times(三次),several times(几次)等表示重复次数的词语连用。故应选B。 5.These kinds of shoes ______ well. A were not sold B won't be sold C are not sold D don't sell 解析:D 6.The first use of atomic weapons was in 1945, and their power ______ increased enormously ever since. A. is B. was C. has been D. had been 解析:因为ever since的意思是“从那时(1945年)起一直到现在”,表示从过去某一时刻起一直延续到现在的动作或状态,要用现在完成时,现在完成时由“have /has+过去分词”构成,所以选C。 7.Years ago we didn’t know this, but recent science ______ that people who don’t sleep well soon get ill. A. showed B. has shown C. will show D. is showing 解析:由表示对照的Years ago和recent可知,“以前不知”,但“现在已经证明了”,所以用现在完成时。故应选B
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