Unit3 Tomorrow’s World —Task學案

★teaching aims:1. help the ss to improve their listening ability and their skills of telling the facts and stating personal opinions.2. make sure that the ss know the difference between the facts and opinions.teaching procedures:skill building 1: distinguishing between facts and opinionsstep one: completing a note sheetskill building 2: asking for informationstep tow: finding out about the computer roomskill building 3: formal writing step three: writing a proposal for a new computer room★     useful words and expressions1. therefore, i am writing to you to voice my opinions.(1) therefore    adv. 因此，所以eg. he worked day and night, and therefore he was able to buy the sports car.   he was the only candidate. therefore, he was elected.therefore 和so兩詞都作“因此”講。therefore作因此講時是副詞，通常不用來連接兩個分句；而so 是連詞，因此他可以用來連接兩個分句。eg. mr. brown knows little about china and therefore he can’t advise you about it.= mr. brown knows little about china, ______ he can’t advice you about it.= mr. brown knows little about china. ________, he can’t advice you about it.(2) opinioneg. what’s your opinion of the new plan?   everyone had a different opinion on the subject.in sb. ’s opinion have a good/ bad/ high/low opinion of… 對…評價好/不好/高/低give/ express/ voice an opinion (on…)   對…發(fā)表意見2. in my opinion, it is about time we had new computers.it is (high/ about) time that 后面的從句謂語動詞通常用過去時表示現(xiàn)在或?qū)�來，有時也用“should＋動詞原形”(should不可省略)， 其意為“早該做某事了”eg. it’s high time you clamed down and set a clear aim for yourself.in my opinion, it’s time you should take action.= in my opinion, it’s time______ take action.3. during the journey, the professor and his nephew come across the central sea, a big underground ocean.come across (不用于被動語態(tài))（1）（偶然）遇見，碰到，發(fā)現(xiàn) （across 為介詞，后接賓語）eg. i came across the children sleeping under the bridge the other day.(2) vi. 被理解，被弄懂it’s a pity that your meaning didn’t ________.很遺憾你的意思沒有真正被理解。（3）提供，給予（常與介詞with連用 ）i hope she would come across with some more information.come about  發(fā)生come out  （太陽，月亮或星星）出現(xiàn)；出版come true 實現(xiàn)你能告訴我事故是怎樣發(fā)生的嗎？4. rescue   vt. ＆ n. 營救；援救常用于：rescue sb. (from…)營救某人；come/ go/ to one’s rescue 來/去救援某人；