Unit1Topic3 Section C讲义 2023-2024学年仁爱科普版七年级英语上册

Section C 重点讲解 【1】What are these? 这些是什么? this, that, these,those 是指示代词,其中 these 和 those 分别是 this 和that 的复数形式, be 动词要用 are。 【2】Let me help you. 让我来帮助你。这是一个短语,Let sb. do sth.让某人做某事。 eg. Let's go!让我们走吧! 【3】英语中普通名词可以分为可数名词和不可数名词。可以分为个体，并且可以直接用数字进行计算的名词叫作可数名词,例如:pen, map, apple, desk 等。可数名词有单复数之分，当可数名词的数量超过一时名词就要变为复数形式,例如:a pen—two pens, a book—five books, an apple— three apples。 当名词前面的限定词是 these 或 those 时,名词也要用复数形式。 【4】可数名词变复数的变化规则： a. 一般情况在词尾加—s。 /如: toy—toys,bag—bags b. b. 以s,x, sh, ch结尾的词加—es。 /如:bus—buses, box—boxes c. c.以辅音字母加y结尾的词，变y为i再加-es。/如: baby—babies, family—families d. d. 部分以f或fe结尾的词,变 f 或 fe为 ves。/如: knife —knives, leaf—leaves e. e. 以o结尾的词通常有生命的加-es，/如：tomato—tomatoes,无生命的加—s。/如:photo—photos f. 另外，英语中还有一些单词属于不规则变化，需要特别记忆,例如:man—men, foot—feet。 基础巩固 Ⅰ.用所给单词的适当形式填空。 1.—What are (this)? —They are apples. 2.—Are (that) cars? —Yes, they are. 3. Look! They are seven (box). 4.—What (be) this in English? —It's a bus. 5. Let me (help) you. Ⅱ.按要求改写句子，每空一词。 1. This is a bus. (改为复数形式) are . 2. They are eight oranges. (改为单数形式) . 3. Those are eggs. (对划线部分提问) . 4. Those are apples. (改为单数形式) . 5. Are those erasers?(作肯定回答) Yes, . Ⅲ.单项选择。 ( )1.——Is it egg? —Yes, it is. A. a B. an C. two D./ ( )2.—What are they? — . A. Yes, they are pens B. No, they aren't C. It's a book D. They're erasers ( )3. They are six . A. bookes B. bus C. boxes D. ora