新标准英语六年级下册M9语法-why和because.doc

新标准英语六年级下册M9语法why和becausewhy和because用法：1、why表示“为什么”，用来询问原因，一般要用because来回答。_Why dont you go to school?_Because its Sunday.2、because表示“因为”，用来回答“why”的问句。_Why are you late?_Because I get up late.特别提醒：because，因为；So,所以。和汉语“因为，所以”不同，在英语中because和so在一个句子中不能同时用，只能用其一。如：Because I was ill yesterday,I didnt go to school.= I was ill yesterday,so I didnt go to school.但Because I was ill yesterday,so I didnt go to school.是错误的。Exercises:一、根据实际情况回答问题1.Why couldnt Helen Keller hear?Because she became deaf as a small child.2.Why couldnt Helen Keller see?Because she became blind as a small child.3.Why did they wear the baseball cups on their heads?Because Lingling made a mistake with cups and caps.二、根据要求做题1合并句子：Why are you wearing a raincoat? Because its going to rain.Im wearing a raincoat because its going to rain.2. Correct the silly sentences（改正错句）:(1)Im wearing a dress because Im going to go swimming. (2) Im wearing a dress because Im going to play basketball.(3) Im wearing a coat because its going to be hot. （答案见SB）(4)Im eating noodles because Im thirsty. （改thirsty（渴的）为hungry）3.合并句子：（1）Its going to rain. Im wearing a raincoat.（because）Because its going to rain,Im wearing a raincoat.Im wearing a raincoat because its going to rain.（2）Im wearing a hat. Its going to be hot.（so）Its going to be hot,so Im wearing a hat.4. I dont go to school because its Sunday.(对画线部分提问)Why dont you go to school?5.Sam / swimsuit / swimming(用because造句，说明因果关系)Sam is wearing a swimsuit because he is going to go swimming.三填空练习 用why because and but so first then填空。 (1) Im eating a hamburger Im hungry. （because）Im hungry， Im eating a hamburger. （so）(2) They are driving planes they are pilots. （because）They are pilots， they are driving planes. （so）(3) I can speak English my sister can speak English too. （and）I can speak English my father cant. （but）(4) Yang Liwei became a pilot, he became a astronaut. Helen learned to read and write, she wrote a book.（First then ；First then） （5）Look, this is a photo of A B. A is crying now B is laughing. is A crying? he didnt do his homework yesterday. He watched TV. the teacher critisized（批评）him. B watched TV, . shes got a red flower. ? after school, she finished（完成）her homework . she watched TV.（and ,but，Why, Because, So, too,but,Why, Because, first, Then）四、小作文。根据所给短文提示，完成以下题目（句意不能和短文中句子重复）。Look, this is a photo of A and B. A is crying now but B is laughing. Why is A crying? Because he didnt do his homework yesterday. He watched TV. So the teacher critisized（批评）him. B watched TV,too.But shes got a red flower. Why? Because after school, she finished（完成）her homework first. Then she watched TV.1. 写一段小短文并用上why because and but so first then。2用（why because）（and but）（because so）（first then）各写几组句子。