Unit 2 English around the world grammar课时作业
Ⅰ.选词填空
1.You shouldn't/oughtn't_to go on working because you look so tired now.
解析:句意:你不应该再继续工作,因为你现在看起来很累。根据句意可知,此处表示"不应该",所以要用shouldn't/oughtn't to。
2.Li Hua has_to pass an examination before he can start work.
解析:句意:李华在他开始工作之前,必须通过一个考试。根据句意可知,此处表示客观上的"不得不",所以要用has to。
3.You needn't/don't_have_to come to the meeting if you're too busy.
解析:句意:如果你太忙,你就不必参加这次会议了。根据句意可知,此处表示"不需要",所以要用needn't/don't have to。
4.You mustn't play now!You shall finish your homework first!
解析:句意:你现在不能玩,你应该首先完成你的家庭作业。根据句意可知,此处表示"禁止",所以要用mustn't。
5.I know things are hard with you,but you must try to get over the difficulties.
解析:句意:我知道你生活不易,但你必须努力克服这些困难。根据句意可知,此处表示主观上的"必须,应该",所以用must。
6.I didn't see her at the meeting this morning;she couldn't/can't have spoken at the meeting.
解析:句意:在今天早上的会上我没看见她,她不可能在会上发言了。根据句意可知,此处表示否定的推测,所以用couldn't/can't。
7.You can't imagine what difficulty we had walking home in the snowstorm.
解析:句意:你不能想象,在暴风雪中走回家时我们遇到了什么困难。根据句意可知,此处表示"不能"。
8.The weather turned out to be fine yesterday. I needn't have taken the trouble to carry my umbrella with me.
解析:句意:结果昨天的天气很好,我本不必麻烦着带一把伞。根据句意可知,表示"