8.2 Grammar【课件】-2022-2023学年七年级英语下册同步精品课堂（沪教牛津版）

英语（牛津版） 七年级下册 English Unit 8 From hobby to career Grammar 观察下面句子 1 课堂导入 When I was eight, I got a book about stars. I was not very interested in animals when I was a child. When I was a 16-year-old schoolgirl, I dreamt of a career studying wild animals in Africa. When I was 26, I travelled from Britain to the mountains of East Africa. When did Patrick get a book about the stars? When he was eight, he got a book about the stars. 何时 当……时 adverbial clauses of time 时间状语从句 main clause 主句 When 引导的时间状语从句。 When I was two months, I could walk. My story When I was six years old, I began to play the piano. When I was nine years old, I began to sing. 主句 从句 从句 从句 主句 主句 引导词When(引导时间状语从句) We can use the conjunction when to form an adverbial clause of time. It links two clauses into one sentence. When I was eight, I got a book about stars. When the girl got older, she sailed the boat herself. A Adverbial clauses of time (when) 2 课堂活动 在......之前 before 在...时间点之中 （当时） when/while/as 在......之后 after 一...就 as soon as 直到... until Things to remember We can also use before, after, while, as soon as and until to form adverbial clauses of time. When we use the conjunction when to link two clauses, we tell people that the two actions happen at (the same time/ different times). Work out the rule We can put an adverbial clause of time at the beginning or the end of a sentence. 时间状语从句可以在句首，也可以在句末。时间状语从句位于主句之前时，要用逗号将从句和主句隔开；位于主句之后时，则不需用逗号。 He got a book about the stars when he was eight. When he was eight, he got a book about the stars. main clause Adverbial clause of time Adverbial clause of time Main clause 由when引导的时间状语从句的意义和时态 意义 表示从句的动作与主句的动作同时发生。 时态 当表示现在的时候，主句和从句同用现在时态； 当表示过去的时候，主句和从句同用过去时态； 当表示将来的时候，主句用一般将来时，从句用一般现在时表将来 时间状语从句用于说明主句动作发生或进行的时间。 时间状语从句位于主句之前时，要用逗号将从句和主句隔开；位于主句之后时，则不需用逗号。 时间状语从句的用法 如： When the bell rings, he gets into the classroom. 当铃声响起时，他进入教室。 When you were out, Jack called in. 你出去的时候，杰克来了。 I will tell her the news when I meet her. 当我见到她时，就会把这个消息告诉她。（从句用一般