(UNIT1)現(xiàn)在完成時(shí)的重點(diǎn)和難點(diǎn)

a. do; finish   b. are; finishing   c. did; finish    d. have; finished
2. -______ you ______anywhere before? -yes, but i can't remember where i______
a. did; surf; surfed         b. have; surfed; surfed
c. did; surf; have surfed    d. have; surfed; have surfed
析：據(jù)yet和before可知,應(yīng)用現(xiàn)在完成時(shí)，故1題選d，2題選d。
(二)當(dāng)句中有"for +段時(shí)間"或"since +點(diǎn)時(shí)間"等時(shí)，主句常用現(xiàn)在完成時(shí)，謂語(yǔ)動(dòng)詞必須是延續(xù)性動(dòng)詞，若是非延續(xù)性動(dòng)詞，要改為延續(xù)性動(dòng)詞或表狀態(tài)的詞(短語(yǔ))。如：
1. his brother has been to stone forest twice______he came to yunnan.
　a. after   b. before    c. since     d. for
析：主句用的是現(xiàn)在完成時(shí)，而從句用的是一般過(guò)去時(shí)，故選c。
2. tom______the cd player for two weeks.
　a. has lent    b. has borrowed    c. has bought     d. has had
析：a、b、c均為非延續(xù)性動(dòng)詞，在肯定句中不與表"段時(shí)間"的短語(yǔ)連用，故選d。
3. i______a letter from him since he left.
　a. didn't receive   b. haven't got   c. didn't have   d. haven't heard
析：據(jù)since可知，應(yīng)排除a、c，"hear from sb.=receive/get/have a letter from sb."意為"收到某人的來(lái)信"，故選b。
三、考查have/has been (to, in)/have/has gone (to)的區(qū)別。如：
1. -have you ever______lintong to see the terra cotta warriors?　-yes, i have.
　a. went to     b. gone to     c. been in      d. been to
析：據(jù)句中的have，排除a，b項(xiàng)意為"去某地了"，c項(xiàng)意為"一直呆在某地"，d項(xiàng)意為"去過(guò)某地"，符合題意，故選d。
2. my parents ______ shangdong for ten years.
　a. have been in    b. have been to    c. have gone to     d. have been
析：本題句中有"for+段時(shí)間"結(jié)構(gòu)，據(jù)此可排除c，b項(xiàng)意為"去過(guò)某地"，不合題意，d項(xiàng)缺介詞，故選a。
四、考查現(xiàn)在完成時(shí)與其他時(shí)態(tài)的聯(lián)系和區(qū)別。如：
1. sun's aunt has gone there for ten years.(改成正確的句子)
析：非延續(xù)性動(dòng)詞與"段時(shí)間"連用時(shí)，除了把非延續(xù)性動(dòng)詞改成延續(xù)性動(dòng)詞外，還可把動(dòng)詞改為一般過(guò)去時(shí)或借助句型"it's +段時(shí)間+since+從句"進(jìn)行句子轉(zhuǎn)換。故答案為：sun's aunt has been there for ten years. /sun's aunt went there ten years ago. /it's ten years since sun's aunt went there.
2. susan has been in this city for more than ten years.(改為同義句)
　________more than ten years ____susan ______to this city.
析：據(jù)上題分析，且since引導(dǎo)的從句要用一般過(guò)去時(shí)，故填it is, since, came。
3. i won't go to the concert because i ____my ticket.