现在完成进行时和固定句式或结构中的动词时态

2022-11-15/ 白山信息网/ 查看: 214/ 评论: 10

摘要现在完成进行时和固定句式或结构中的动词时态现在完成进行时（主语﹢have/hasbeen﹢动词–ing）①表示从过去某时

现在完成进行时和固定句式或结构中的动词时态
现在完成进行时（主语﹢have/has been ﹢动词 –ing）
① 表示从过去某时开始一直持续到现在的动作，并且可能继续持续下去。
The Chinese have been making paper for two thousands years.
中国有2000年的造纸历史。（动作还将继续下去）
① 表示在说话时刻之前到现在正在进行的动作。
We have been waiting for you for half an hour.
我们应经等你半个钟头了（人还没到，如同在电话里说的，还会继续等下去）.
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将来进行时：shall/will + be + 现在分词"，表示将来某一时刻正在进行的动作。
What will you be doing (at eight) next week?
I won’t be free Friday morning. I’ll be seeing a friend off.

固定句式或结构中的动词时态
1.This/It is the first/second time＋that从句。that从句中用现在完成时。
如把is改为was，则从句中用过去完成时。
This is the first time I have come here.
It was the third time(that)he had made the same mistake.
2．It is/has been＋一段时间＋since 从句。since从句中用一般过去时。
如把is改为was，则从句中用过去完成时。
It is/has been three years since we have had such a wonderful time.
It was ten years since we had had such a wonderful time.
3．was/were about to do...when... 意为“将要做……(这时)突然……”。
I was about to go out when the telephone rang.

【典例精析】
1. At present, one of the apartments in favor of the new airport ________ that it will going a lot jobs to the area.
A. is B. are C. will be D. were
【解析】本题考查时态的用法。A。根据at present =now 可知，应用一般现在时。
2. The number of foreign students attending Chinese universities ________ rising steadily since1990.
A. is B. are C. has been D. have been
【解析】本题考查主谓一致和时态，主语是 the number故谓语动词用单数，又因时间状语是since 1997所以用完成时态C。
3. I was out of town at the time, so I don’t know exactly how it _______.
A. was happening B. happened C. happens D. has happened
【解析】本题考查具体语境中的时态，后一句隐藏的时间状语是at the time. B