1231. But there’s no need to worry if you have never skied before.(SB U15)Ⅱ但是，如果你从没滑过雪，也不必担心。there is no need 的意思是“没有必要”，后接不定式或介词 for 短语。4(1) 我们没有必要在这儿停留。 __________________________________(2)We have plenty of time, ______________ _______________ ( 所以没有必要匆忙 ).There’s no need for us to stay here.so there is noneed to hurry5( ) Your father will be better soon. There is no need ____________.A. to worry about B. worriedC. to be worried D. to be worried about6Cthere is no need 后要接不定式。worry about 或 be worried about 后要有宾语。注意 need 不是介词 about 的宾语，故 A 、 D 两项错误。试比较： There is no need to worry about him.72. Should you have enough energy left after a day on the slopes, you can take a dip in the pool…(SB U15)Ⅱ如果在山坡上玩了一天之后还有足够的精力，你还可以在游泳池里泡一泡…… 8“should+ 主语 + 动词原形”意为“如果 / 万一……”，是一个省略句，原句为：If you should have enough energy…在虚拟语气中， if 引导的条件状语从句中有 were 或助动词 should, were, had ，可以把 if 省掉，把 should, were, had 放到句首。9①Should __________________( 你碰到 ) Sunny, tell her she owns me a letter. ②Had __________________ ( 要是你去了演唱会 ), you would have seen the famous singer. ③Should __________________ ( 万一下雨了 ), the crops would be saved. ④__________________ ( 如果我是你 ), I would accept the invitation.10【答案】①you run into②you attended/gone to the concert③it rain④If I were you/Were I you11( ) This printer is of good quality. If it ____ break down within the first year, we would repair it at our expense. (2009 天津卷 )A. would B. shouldC. could D. might12B虚拟语气中与将来事实相反的假设， if条件从句中应用情态动词 should ， were+to do 或动词的过去式。133...
