专升本英语--语法讲义1

语法结构一、时态 1． 一般现在时_______________________________________________________________。1) If she doesn’t tell him the truth now, he’ll simply keep on asking her until she ______. A. does B. has done C. will do D. would do 2) Such crimes may be so complex that months or years go by before anyone _____ them. A. discovered B. will discover C. would have discovered D. discovers注：______________________________________________________________。 I decided to go to the library as soon as I _______ what I was doing. A. have finished B. would finish C. finished D. had finished2． 现在进行时1） 与 always / constantly / continually / forever 等副词连用，表示_____________________________________________________________________________________________。 He is always changing his mind. 2） 表示________________。 My friend is coming to visit me next week.3． 现在完成时时间状语标记词：for 和 since 引导的短语；up to now, this week / year / month, so f a r, to date, as yet , just, lately, recently, already, ye t , for the last few weeks 等。1） 与情态动词连用a. must + 现在完成时：_________________________________may / might + 现在完成时：___________________________can’t / couldn’t + 现在完成时：_________________________ 1) From the tears in Nedra’s eyes we can deduce that something sad ______. A. must have occurred B. would have occurred C. might be occurring D. should occur2) My pain ______ apparent the moment I walked into the room, for the first man I met asked sympathetically: “Are you feeling all right?” A. must be B. had been C. must have been D. had to be3) Investigators agreed that passengers on the airliner ______ at the very moment of the crash. A. should have died B. must be dying C. must have died D. ou...