[初一英语]牛津7A Unit4复习课件.ppt

3. how long 和 how often的区别: 3. how long 和 how often的区别: * 7A Unit4复习纲要 学习有关食物和生活方式的词汇。 讨论喜欢和不喜欢的食物，学会如何表达个人喜好。 读懂“饮食习惯与生活方式”话题的阅读材料并理解大意。 正确使用频度副词。 熟练使用可数名词和不可数名词及其表达方式。 掌握可数名词变成复数形式的变化规律。 熟练使用含有there be句型的各种句式。 能将关于饮食习惯和生活方式的信息用文章形式表达。 《中考备考手册》7A Unit4语言知识巩固运用 Page10 词汇： exercise [‘eks?saiz] n. 1.表“体格锻炼，运动；运用”时，为不可数名词； Walking is good exercise. 1. exercise 作为名词和动词的用法 2. 表“体操；（一种）运动；练习；实习；习题；练习（教材）”时，为可数名词 We do morning/eye exercises every day. We do many Maths exercises every day. 3. vt. 锻炼；练习；使用 vi. 运动；练习 Do you eat properly and exercise regularly? You need to do more exercise. (un.) You need to exercise more. (v.) 翻译：你需要多锻炼。 2. need 的用法： ①. 作为名词，意为“需求；需要；危急”。 There is no need to trouble him. A friend in need in a friend indeed. He is in great need of money. 他急需用钱。 ②.作为实义动词时，可用于各种句式。构成否定句和疑问句时要借助于助动词do或does。常用句型有： a). need sth. 需要某物 (= be in need of sth.) They don’t need it any more. b). need to do sth. 需要做某事 (否 don’t/ doesn’t need to do ) You need to take good care of your mother. c). need doing 需要被做 (= need to be done) The door needs painting. = The door needs to be painted. 2. need 的用法： ③. need作为情态动词时，只能用于否定句和疑问句。否定句为needn’t加动词原形；疑问句，把need放在主语的前面。 There is enough time. You needn’t hurry. Need I type this letter again? 注意： a). needn’t do = don’t/ doesn’t need to do 不需要做某事 You needn’t wait for me. = You don’t need to wait for me. b). 以need开头的疑问句与must开头的疑问句一样，肯定回答用must，否定回答用needn’t / don’t need to/ don’t have to. Need I hand in my homework now? Yes, you must. No, you needn’t / don’t need to/ don’t have to.. how long有以下两个主要意思： 1. 表示多长时间，主要用来对一段时间(如three days) 、 for+ 一段时间或 since +过去时间等提问。如： How long does it take to get to London from here? At least ten hours. How long have you known him? Since I moved here. How long has he watched TV? For about an hour. 2. 表示某东西有多长， 对物体的长度提问。如： How long is the bridge? It’s 500 metres. how often 指每隔多久，主要用来对频率副词或状语(如：once a week, thre