摘要: 虚拟语气应用于如下结构中: (1)一种定语从句:It’s time that+did (2)两种目的状语从句: so that/in order that+ can/may/could/might +do (3)三种随时变化句: ① wish 现在→did/were if only + 过去→had done as if/though 将来→could/would do ② would rather + 现在/将来→did/were 过去→had done ③ 现在:if+did/were, would+ do 过去:if+had done, would+ have done 将来:did if+ were to do, would+ do should do 注意:除了由if引导的虚拟条件句外.还有倒装条件句.即把were.had或should提前,混合时间句.虚实错综句.以及含蓄条件句.即由or, otherwise, with, without, but for来引导的. (4)四种名词性从句: ①当表语是important, natural, necessary, possible, strange, arranged, decided, demanded, ordered, requested, suggested, surprising, a pity, no woder时.主语从句要用虚拟语气.例: It’s important that we help each other. ②动词一坚持.两命令.三建议(advise, propose, suggest).四要求(ask, demand, request, require)后的宾语从句要用虚拟语气.例: He insisted that he be sent to the West. 注:insist, suggest时.从句应用陈述语气.如: Her pale face suggested that she was ill. ③idea, plan以及表示“坚持.命令.建议.要求 等动词的同源名词作主语时.表语从句用虚拟语气.例: My suggestion is that we hold a class meeting. ④idea, plan以及表示“坚持.命令.建议.要求 等动词的同源名词后的同位语从句要用虚拟语气.例: The office gave an order that his soldiers fight back bravely.

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Nowadays, we have tons of high-tech gadgets to help us keep connected to our friends and family. Many of us have cellphones to ___16__ calls and write text messages; the Internet to chat with friends and __17__ e-mails. But being in touch with your friends and family also means __18__ in touch with some strangers. We often get spam(网上垃圾邮件) in our inbox, calls from strangers, and messages from __19__ people. So what should we __20__ with all of these?

__21__ you might want to answer the call from an unknown number, or respond to the message from someone you don’t know, try __22__. You are not sure __23__ they are contacting you, and it could be ill-spirited. It is __24__ not to respond to calls or messages from numbers that you are not familiar __25__. The same rule applies to (应用于) e-mails. There are many people who create viruses that __26__ harm your computer, and these viruses are disguised(假装) as e-mails. __27__ opening these e-mails, you are risking getting a virus __28__ could destroy your computer.

In other words, all the new technology is great for keeping in touch, but also comes with some bad things. __29__ yourself out of trouble, it is best to __30__ from messages and calls that you don’t know.

A. make                 B. do                C. receive                    D. ring

A. write                  B. send         C. answer                          D. read

A. to be                    B. being           C. be                             D. are

A. known               B. well-known   C. unknown                D. better-known

A. manage              B. compare       C. deal                          D. do

A. But                       B. Since               C. Because                     D. Although

A. not                    B. not doing      C. not to do                    D. not to

A. that                          B. what            C. why                          D. how

A. most dangerous     B. safest               C. necessary                D. valuable

A. by                     B. with         C. at                                 D. into

A. should               B. could            C. would                    D. need

A. In                  B. By            C. With                      D. At

A. that                 B. what             C. if                           D. whether

A. To keep           B. Keep        C. Keeping                 D. Kept

A. refuse                 B. get close      C. stay away            D. stop

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