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）. 新概念课文 新概念英语第一册教材 新概念三 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