1. no modern telecommunications, we would have to wait for weeks to get news from around the world.
A. Were there B. Had there been
C .If there are D. If there have been
【答案】A
解析：句意：如果没有现代的通信，我们将会等上几周的时间才能得到来自世界的新闻。对现在情况的虚拟，条件句中用一般过去时，主句用“ would / should / might / could +动词原形。虚拟条件句中有had, should, were时，可以将if去掉，然后把had, should, were提到主语前面。所以选A。
虚拟条件句的基本类型与结构：
一、与现在事实相反。若与现在事实相反，虚拟语气的条件从句的谓语用过去式(be通常用were)，主句谓语用“should (would, could, might)+动词原形”。
二、与过去事实相反。若与过去事实相反，虚拟语气的条件从句的谓语用过去完成时(had+过去分词)，主句谓语用“should (would, could, might)+have+过去分词”。
三、与将来事实相反。若与将来事实相反，条件从句的谓语用过去式(be通常用were)，主句谓语用“should (would, could, might)+动词原形”。
考点：考查虚拟条件句。
2. My room is a mess, but I _____ clean it before I go out tonight. I can do it in the morning.
A. daren't B. shouldn't
C. needn't D. mustn't
【答案】C
解析：句意：我的房间很乱，但是在今晚我出去之前不需要打扫，我可以明天早晨再打扫。A.不敢;B.不应该;C不需要;D.不许。根据句意，故选C。
3. —Do you have Betty's phone number?
—Yes. Otherwise, I _____ able to reach her yesterday.
A. hadn't been B. wouldn't have been
C. weren't D. wouldn't be
【答案】B
解析：句意： 你有贝蒂的电话号码吗? 有。否则我昨天就联系不到她了。otherwise，否则,相当于一个条件状语从句：If I hadn’t have her phone number,即对过去的虚拟的条件状语从句，可以判断出主句用wouldn't have done 表示对过去情况的虚拟，故选B。
4. We ______ back in the hotel now if you didn’t lose the map.
A. are B. were
C. will be D. would be
【答案】D
解析：句意：如果不丢失地图，我们就已经到旅馆了。根据条件状语从句中“if we didn’t lose the map”可知，主从句都是对现在情况的假设，所以选用D。
5. If Mr. Dewey _____ present, he would have offered any possible assistance to the people there.
A. were B. had been
C. should be D. was
【答案】B
解析：句意：如果Dewey先生在场的话，他会提供那里人们的任何可能的帮助。本题是if条件从句与过去事实相反的虚拟语气，故从句用had + v-ed，主句用would / could / should / might + v-ed。故B正确
6. I need a new passport so I will have to have my photographs ______.
A. taking B. taken
C. being taken D. take
【答案】B
解析：句意：我需要一个新护照，所以我将不得不拍照片。考查非谓语动词作宾语补足语，宾语my photograph与补足语之间为被动关系，故用过去分词作宾语补足语。C项表示正在进行。故选B。
7. _____ more about Chinese culture, Jack has decided to take Chinese folk music as an elective course.
A. Learn B. Learned
C. To learn D. To be learning
【答案】C
解析：句意：为了更多了解到中国文化，杰克决定选择中国传统音乐作为选修课。这里是动词不定式形式的非谓语动词做目的状语。故选C
8. Ordinary soap, _____ correctly, can deal with bacteria effectively.
A. used B. to use C. using D. use
【答案】A
解析：句意：如果正确使用的话，普通的肥皂可以有效地处理细菌。Ordinary soap can deal with bacterial effectively是主句，______ correctly是条件状语，修饰ordinary soap，ordinary soap和use之间是被动关系，故要用过去分词，过去分词所表示的一个含义就是“被动”。A选项正确。
9. The hospital has recently obtained new medical equipment, _____ more patients to be treated.
A. being allowed B. allowing
C. having allowed D. allowed
【答案】B
解析：句意：近期这个医院购进了新的医疗设备，允许更多的病人被治疗。前句购进医疗设备和后面允许更多的病人被治疗之间是必然的结果关系，用doing即现在分词作结果状语，表示顺理成章的结果。A. being allowed 表示被动且正在进行，C. having allowed 强调先于谓语动词发生，D. allowed 表示被动且完成，故选B。
10. I had as much fun sailing the seas as I now do with students.
A. working B. work
C. to work D. worked
【答案】A
解析：句意：我在海上航行和现在和学生一起一样快乐。使用非谓语动词作状语，I和work是主谓关系，用现在分词作时间状语。故选A。
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