286. 答案:A
解析:passed 发生had begun 之后,故用过去时passed。例如;Since he had died, the town changed a lot.
287. 答案:D
解析:would do sth. 有时表示“过去往往做某事”,如:Whenever his boss came in, he would stand up.
288. 答案:D
解析:“三年来一直写”,而且“现在仍在写”,故用现在完成进行时has been writing 。“到现在已经写了”文章,故用现在完成时has written 。再如:He has been working as manager for fourteen years and he has signed a hundred contracts.
289. 答案:C
解析:句子说“现在找不到”(can’t find), 故put 用现在完成时(have put), 表示与现在有关。
290. 答案:D
解析:“知识来自实践”是真理,故用现在时。例如:Practice makes perfect. /Time and tide wait for no man.
291. 答案:C
解析:从说话时开始将来要进行一段时间,故用将来进行时(will be going)。例如:From now on they will be working there for another four weeks.
292. 答案:C
解析:本题是反意疑问句的特殊形式。前半句是表示建议的陈述,后面的疑问表示询问对方的意见,用肯定形式。例如:Let’s go on with this experiment, shall we?
293. 答案:B
解析:从but 前的分句可以看出它是虚拟过去的形式。“忙”(be busy)是过去的事实,故用过去时。如:He would have helped you but he was out of town on an errand.
294. 答案:A
解析:“到达”发生在“没有做好准备”(were not ready )之后,故用过去将来时。was arriving 是过去进行时的形式,表示过去将来时态。这种用法只限于常用词汇,如:We didn’t know they were going. /He told me he was going that night.
295. 答案:D
解析:汽车按时刻表出车是现在的固定事实,故用现在时。这里是否定的意思,故用never leave。又如:He said that youth is not better than old age in a sense.
296. 答案:C
解析:“去年去”当然用过去时态(went)。又如:He has been writing for ten years and he wrote another story last week.
297. 答案:A
解析:will 有时当情态动词用,意思是“愿意”,此时它不表示将来,如:If he will give us a hand, we will be grateful.
298. 答案:D
解析:“现在正在练”(is practicing),故用现在进行时。又如:He does physical exercise after six in the morning but he is doing it now at noon.
299. 答案:C
解析:“过去坐下”,所以用过去时。seat 是及物动词,用在“主语 + 及物动词 + 宾语”句型里。此句中seat 是过去分词形式,作表语用,表示状态,它来自被动语态的过去分词。例如:I went in and was seated (= seated myself 或sat down) on a bench.
300. 答案:B
解析:“知道”是感知动词,没有进行时。此句中的“知道”是现在的事实,故用现在时。又如:I think you know French.
本文选自新东方在线论坛。
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