人教版 九年级全册 Unit 3 Section B 2a-2d(Language points).ppt

1. convenient adj. 意为“便利的; 方便的”, 常用于句型“It+ be+ convenient (+for sb.) +to do sth.”中如： It is simple and convenient for old people to use this kind of mobile phone. A bicycle is often more convenient than a car in big cities.,【运用】 1) Traveling around big cities by taxi can cost a lot of money, but its usually _ to take the underground train to most places. A. amazing B. expensive C. convenient D. exciting 2) It is _ for me to go shopping. There is a new supermarket near my home. A. difficult B. important C. impossible D. convenient,2. 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。

如: 他的第二部电影就没那么有趣翻译) His second movie is less interesting.,olite作形容词，意为“有礼貌的；客气的” be polite to sb. 意为“对某人有礼貌” 如：Please be polite to our guests. Its polite to do sth. 意为“做某事是有礼貌的”如： Its polite to say “Thank you”.,【拓展】 polite的副词形式为politely，意为“有礼貌地；客气地”polite的反义词是impolite，意为“不礼貌的；粗鲁的”如： The girl told me politely that her mother was not at home. Its impolite to refuse others directly.,【运用】 I. 根据所给提示，将下列句子翻译成英语 1) 玛丽(Mary)对她的老师很有礼貌be polite to sb.) 2) 为别人开门是礼貌的Its polite to do sth.) 3) 那个小男孩客气地向我寻求帮助politely),Mary is polite to her teachers.,Its polite to open doors for others.,The little boy asked me for help politely.,II. 根据句意，写出所缺单词。

1) It is pto say “thank you” when someone has helped you. 2) Tom thinks people will help him if he asks for help (polite). 3) Talking loudly in a library, a museum, or a movie theater is (不礼貌 的).,polite,politely,impolite,3. 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, 更不确定如： 他也许会来，但非常靠不住翻译) He might come, but its very unlikely.,【运用】 根据提示将下列汉语句子翻译成英语 1) 爸爸也许知道如何发动那台机器might) 2) 他可能及时赶到了那儿，但我不确定 (might),Dad might know how to start that machine.,He might get there in time, but I am not sure.,4. However, it is important to learn how to use the right language in different situations. it作形式主语 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. (+ _ + 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： Its difficult for us to finish the work in an hour.,for,2) It is + adj. + _ + 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：Its kind of you to say so.,of,5. whom 仔细观察下列例句，思考whom的用 法，然后补全结论部分所缺内容 【例句】 1) I dont know whom / who Linda will invite. 2) Whom / Who are you talking with? 3) To whom did you give the pen, John?,【结论】 whom是who的宾格形式，用作疑问代词，意为“谁；什么人”。

通过观察以上例句我们可知，whom在句中可作_词或介词的宾语由例句1和例句2我们可知，在口语或非正式用法中，whom往往可以被who代替由例句3我们可知，如果whom紧接在_词之后，则不能被who代替动,介,【运用】 根据句意用who或whom填空 1) _ are the children talking about? 2) With _ did Mary go shopping last Sunday?,Whom / Who,whom,。