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1、Unit10 单元语法重难点突破1be supposed to do的用法1）表示“应该，被期望”。【例】（1）We are supposed to be here at seven. 我们应该七点钟到。（2）The library is supposed to open at eight in the morning.图书馆应在早晨八点钟开门。（3）What are you supposed to do when you meet someone? 当你遇到某人的时候应该怎么做？（4）Youre supposed to kiss. 你应该亲吻。（5）Youre not supposed to
2、 shake hands. 你不应该握手。2）用于否定句中可表示“获准”。【例】（1）You are not supposed to smoke on the bus.你不可以在公共汽车上抽烟。（2）You are not supposed to take photos in the hall.你可不能在大厅里拍照。2动词不定式或动词不定式短语做主语不定式的用法前面已讲过，这里主要是不定式做主语的用法。通常使用的句式是it isto do sth.。【例】（1）It is important for us to learn English well. 学好英语对我们来说是很重要的。（2）It is very difficult to work out this problem. 算出这道题是很难的。（3）It is very kind of you to help me. 你能帮助我，你真好。（4）To see one time is better than to hear a hundred times.百闻不如一见。（5）How would it be to start tomorrow? 明天动身怎么样？（6）It takes thirty hours to get there by train.坐火车到那儿要三十个小时。 1 / 1