人教版九年级全册重点内容归纳unit3 section B

人教版-九年级全册unit 3重点知识归纳Section B1.convenient  adj.  便利的；方便的it/sth. be convenient for/to sb.  对某人来说方便e.g.They thought it was more convenient to eat in the kitchen. 这家人认为在厨房吃饭更方便。Internet makes it convenient for us to get in touch with each other.互联网使得我们相互联系便利了。在你方便的时候请来看我们。误: Please come to see us when you are convenient.正: Please come to see us when it is convenient for you. 2. cornerdrive sb. into a corner  逼得某人走投无路turn a corner   拐过街角around the corner 在拐角处, 在近处, 即将来到in the corner   在角落里(在建筑物内部)on / at the corner  在拐角处(在建筑物外部) 3.Both are correct, but the first one sounds less polite.less + 形容词或副词, 构成降级比较形式, 相当于中文“不那么; 稍许不…”之意。e.g. His second movie is less interesting.他的第二部电影没那么有趣。 4.It might seem more difficult to speak politely than directly.情态动词might 表达一种可能性及推测的不确定性, 意思与表达可能性的may相当, 表示“有可能, 也许会”, 但语气更加委婉, 更不确定。e.g. He might come, but it’s very unlikely.他也许会来，但非常靠不住。 5.However, it is important to learn how to use the right language in different situations.it作形式主语：在英语中, 如果主语是较长的动词不定式或一个句子, 为了保持句子结构的平衡, 避免头重脚轻, 通常用it作形式主语放在句首, 而把真正的主语放在句尾。常见的句型有：1) It is + adj. (+ for + sb.) + to do sth.。常用于此句型的形容词有important, difficult, dangerous, necessary, useful, possible等, 用来对to do sth. 进行说明。如：It’s difficult for us to finish the work in an hour. 2) It is + adj. +of + sb. + to do sth. 常用于此句型的形容词有good, kind, nice, clever, wise等, 用来对sb.的性格、品质等进行说明。如：It’s kind of you to say so.