Unit10 SectionA Grammar-Focus—4c 课件 2022-2023学年人教版八年级英语下册

Unit 10 I’ve had this bike for three years. Section A Grammar Focus-4c 八年级(下) 写出下列短语 举办庭院拍卖 长大 收拾、整理 不再 起初 例如 至于 放弃 说实在的 have a yard sale 1 clear out no longer /not any longer/not anymore at first for example/such as as for give up grow up to be honest 说出下列词的过去式和过去分词 shop_____ _____ stop ______ _______ plan _____ _____ carry ______ ______ enjoy _____ _____ try visite _____ _____ decide think _____ _____ sell hear _____ _____ spend come _____ _____ go take _____ _____ give shopped shopped stopped stopped enjoyed enjoyed tried tried visited visited decided decided thought thought sold sold heard heard spent spent came come went gone took taken gave given planned planned carried carried Grammar 表示从过去已经开始持续到现在的动作或状 态，可以和表示“从过去某一时刻延续到现在 的一段时间状语”连用，如“for+时间段”、 “since+过去时间点”、“since+过去时的从句”、 “since+一段时间+ago”。且for与since引导的时 间状语可以相互转换。 Present Perfect Tense 现在完成时 e.g. My uncle has worked at this factory for ten years. = My uncle has worked at this factory since ten year ago. I’ve lived here since 1990． 自从1990年以来我就住在这里。   I haven’t seen him for three years. 我三年没有看见他了。   含有for，since的现在完成时的用法歌诀: 过去的动作或状态，一直持续到现在，for、since 把时间带。 She’s been at this school since five years ago.   自从五年前她就在这个学校。   口诀 for与since都能与现在完成时连用，但区别较大： （1）for后须接“时间段” e.g. He has studied English for five years. 他学英语5年了。 （2）since后须接“时间点” e.g. He has studied English since 1999. 他从1999年开始学英语。 for 和 since 在现在完成时中的应用 （3）二者可以转换 for + 一段时间 = since + 一段时间 + ago e.g. He has been here for five weeks. = He has been here since five weeks ago. 他到这儿已经有五个星期了。 e.g. He has taught here since he came to China. 自从他来到中国就在这儿教书。 We have been friends since we met in school. 我们从在学校见面起就成为了好朋友。 （4） since能引导时间状语从句(主句用现在完成时，从句用一般过去时)，而for则不能。 （5）现在完成时常用句型： ①It is (has been) +时间段+ since +时间状语 或从句 e.g. It is four days since last Friday. 从上周五到现在已经四天了。 It has been two years since Jim c