【文章內(nèi)容簡介】
D. Were there (3)There __B__ great changes in such kind of PDAs(掌上電腦 ) in the last few years.(2020, 平?jīng)?) A. was been B. have been C. has had D. have had 2. Since 1989 Project Hope has built schools all over China.自從 1989年以來 , 希望工程已經(jīng)在全國建了學(xué)校。 【 典例在線 】 Since 2020, China has sent six spaceships into 2020年以來 , 中國已發(fā)送 6艘宇宙飛船進(jìn)入太空。 The film has been on for an 。 It39。s ten years since he became a 始到現(xiàn)在已有 10年了。 【 拓展精析 】 現(xiàn)在完成時(shí): for后接表示一段時(shí)間的詞或短語 , 如 for 5 years。 since后接表示過去某一時(shí)間的詞或短語 (如 since last month), 也可接表示過去的句子 (如 since he came to China)。即: for+時(shí)間段; since+時(shí)間點(diǎn)。 當(dāng)與 how long, for, since連用時(shí) , 句中的動(dòng)詞要用延續(xù)性動(dòng)詞;短暫性動(dòng)詞須換成延續(xù)性動(dòng)詞或表狀態(tài)的形容詞或介詞短語。 如: e→ be in; leave→ be away; open→ be open; close→ be closed; begin/start→ be on; borrow→ keep; buy→ have等。 it is+時(shí)間段+ since+從句 (一般過去時(shí) ), 意為 “ 自從?? 到現(xiàn)在已有多長時(shí)間了 ” 。 【 活學(xué)活用 】 (4)—I wonder when you __C__ the new watch.(2020, 隨州 ) —Well, I ________ it for two weeks. A. have bought; have had B. bought; have bought C. bought; have had D. have bought; have bought (5)—When will A Bite of China Ⅱ begin tonight? —It __D__ for ten minutes.(2020, 揚(yáng)州 ) A. will begin B. has begun C. will be on D. has been on (6)She __B__ her home town since she was 18 years told me she would return soon.(2020, 涼山 ) A. has left B. has been away from C. left D. went away 1. have been to, have gone to, have been at/in 【 典例在線 】 He has been to 。 He has gone to 。 He has been in Beijing for ten 了。 【 拓展精析 】 have been to, have gone to, have been at/in都用于現(xiàn)在完成時(shí) , 表示過去的動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。 易混辨析: have been to, have gone to, have been in/at have gone to 意為 “ 去了某地 ” ,表示某人不在說話的地方 , 還沒有回來。 have been to 意為 “ 去過某地 ” ,表示某人到過某地 ,現(xiàn)在已經(jīng)回來了;常和 ever、 never和次數(shù)連用。 have been in/at 常與一段時(shí)間連用 ,意為 “ 來 /去 /到某地多長時(shí)間了 ” 。 【 活學(xué)活用 】 (1)—Where is Mr. Wang? (2020, 揚(yáng)州 ) —He together with his students __A__ Zhuyuwan Park. A. has gone to B. have gone to C. has been to