没有科技上的这些尖端突破，无论是好运带来的还是按计划取得的，我们今天的世界将完全是另一个样子。 (1)without在本句中表示一个假设的条件，后面的主句中用“would＋have done”表示对过去的虚拟。 (2)当虚拟语气表示与现在事实相反时，从句的谓语动词用“过去式(be的过去式用were)”，主句的谓语动词用“would/could/should＋动词原形”构成。像这样表假设条件的介词还有but for；连词or，otherwise，它们引导的句子在英语中称为含蓄条件句。 ①But for your kind help，I ________________ (succeed) in passing the driving test.

　　要不是你的好心帮助，我就不可能会通过驾驶考试了。 ②We human beings ________________(survive) without all the plants and animals around us.

　　如果我们周围没有植物和动物，人类就不能生存。 答案　①would not have succeeded　②could not survive 二、短语填空 take over；give away；carry out；figure out；get across；*be dedicated to；make up for；drop off

　　1.We must ____________ how to solve the problem. 2.Bill Gates was so nice that he decided to ____________ ninety percent of his money to the charities. 3.He was convinced that it was necessary to ____________ to them. figure out give away get across 4.It will be easier to work out a plan than to _________ it ________. 5.Jack has been wrestling with these technical problems since he ____________ the department last year. 6.I ____________ and missed the end of the film. 7.Can you give me some advice on how to ____________ the time I have lost? 8.*China will continue to ____________ international cooperation in this area.

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