1、单元语法小专题一、do 的基本用法(一) 作实义动词,基本含义是“做”、 “干” ,其第三人称单数形式为 does。例如:We do our homework at home. 我们在家做家庭作业。(二) 作助动词,没有实际意义,只是帮助其它动词构成疑问句或否定句,其第三人称单数形式也是does。1. 否定句:主语(第三人称单数)+ doesnt + 动词原形 + 其他.主语(非第三人称单数)+ dont + 动词原形 + 其他.2. 疑问句及其简略回答:(1) Does + 主语 (第三人称单数) + 动词原形 + 其他?肯定回答:Yes, 主语 + does. 否定回答:No, 主语 +
2、doesnt.(2) Do + 主语 (非第三人称单数) + 动词原形 + 其他?肯定回答:Yes, 主语 + do. 否定回答:No, 主语 + dont.【注意】如果一个一般现在时的句子中的谓语动词是do/does,在作句型转换(变否定句或疑问句 )时,要根据句子主语的人称和数而添加助动词 do 或 does,而不可直接提前 do/does 或在 do/does 后加 not。加助动词 does或 doesnt 时,肯定句中的实义动词要变为动词原形。(二) 特殊疑问句:特殊疑问句是疑问句中的一种,它不能用 yes 或no 进行回答,而应该根据实际情况作答。特殊疑问句由疑问词( 词组)引导,
3、不同的疑问词(词组) 用来询问不同的对象。这里,我们把本册教材中出现的疑问词(词组)及其含义和询问对象列表如下:疑问词(词组) 含义 询问对象what 什么 名字或某事物来源:gkstk.Comwho 谁;什么人 某人或某动作的执行者where 在哪里 位置、地点how 怎样;如何 方式when 什么时候;何时时间why来源:学优高考网 gkstk 为什么 原因what color 什么颜色 某物颜色how much 多少钱 价格how old 多大 年龄单元语法强化训练来源:学优高考网. 改正下列句子中的错误。1. They doesnt like apples, but they like
4、s bananas.2. Do Sally play soccer with you?3. My sister does do her homework in the afternoon.4. What does your friend likes?来源:学优高考网 gkstk5. His grandfather doesnt watches TV on Saturday morning.6. Does Anna have math on Monday?No, she isnt. . 按要求改写下列句子。1. Do you like bread and milk for breakfast?
5、(作肯定回答)Yes, _ _. 2. His daughter loves her room. (改为否定句)His daughter _ _ her room.3. Janes notebook is in the schoolbag. (对画线部分提问)_ _ Janes notebook?4. The boy likes history and music. (对画线部分提问)_ _ the boy _?5. Pauls favorite day is Thursday. (对画线部分提问)_ _ Pauls favorite day?6. My grandparents are fi
6、ne. (对画线部分提问)_ _ your grandparents?7. Mrs. Miller is our English teacher. (对画线部分提问)_ _ your English teacher?8. Bill likes math because it is useful. (对画线部分提问)_ _ Bill _ math? . 填入恰当的疑问词(词组),完成对话。1. _ is your chair?Its brown.2. _ is your Chinese teacher?He is thirty-five.3. _ is your yellow T-shirt?I
7、ts 35 dollars.4. _ is the school trip?Its on September 25th.5. _ is his name?Eric Green.6. _ is the woman on the bed?She is my aunt.单元语法知识精讲. 1. doesnt 改为 dont 2. Do 改为 Does 3. 去掉 do 4. likes 改为 like 5. watches 改为 watch 6. isnt 改为 doesnt. 1. I/we do 2. doesnt love 3. Where is 4. What does, like 5. What is 6. How are 7. Who is 8. Why does, like. 1. What color 2. How old 3. How much 4. When 5. What