1、Language points1 What do you think green house gases do?你认为温室气体有什么作用呢 ?本句中 think后接了一个由 what引导的宾语从句。 但应注意的是：特殊宾语从句即当一般疑问句主句的谓语动词是 think, believe， suppose， consider, imagine， guess 和 suggest 等时，表疑问的词要放在主句前即句首。 例如：正 Who do you think will win in the game?误 Do you think who will win in the game? 当然一般情况下宾
2、语从句的疑问词应放在主句之后，例如：误 Why do you know we cant cut down the big tree?正 Do you know why we cant cut down the big tree?2. So how has this come about and does it matter?考点 come about 是不及物短语，意为 “发生 ”。Please tell me how the accident_. I am still in the dark. (2005 江西 )A. came by B. came outC. came to D. cam
3、e about得到，获得 出来， 露出达到Its already 10 oclock. I wonder how it _ that she was two hours late on such a short trip. (湖北 2006)A. came over B. came out C. came about D. came up 点拨 根据句意 “已经十点钟了。我不知道是怎么回事，这么短的路程她迟到了两个小时。 ”选 C。 come over来访；come out出来，出版； come up 出现，到来。3. There is no doubt that the earth is b
4、ecoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.There is no doubt that.There is some doubt whether.辨析： 主句为肯定句时， doubt 后使用连词 whether。主句为否定句时，doubt后则使用连词 that。 eg:Theres no doubt that one day a cure will be found. There is little doubt that he was the killer.考点 1 There is no doubt that .是固定句型，意为 “毫无疑问 ” ， that引导的是同位语从句，用来进一步补充说明 doubt的具体内容。考例 Some researchers believe that there is no doubt _ a cure for AIDS will be found. (广东 2005)A. which B. that C. what D. whether点拨 根据固定搭配 there is no doubt that .可知选 B。
