Unit 10 Section A 单元知识点讲解2022-2023学年人教版英语八年级下册

Unit 10 I’ve had this bike for three years. Section A 教材知识全解 讲透知识 查漏补缺 知识点一how long引导的特殊疑问句 教材原文How long have you had that bike over there?你买那边的那辆自行车多长时间了? 本句是how long引导的特殊疑问句,时态是现在完成时,结构是“How long+ have/has+主语＋过去分词＋其他?”.how long表示“多长时间”,对时间段进行提问. -How long have you lived in Beijing?你在北京住了多长时间了? -For ten years.十年了. 例1(2020湖北孝感安陆期末)-________ have you been at this school? -Since 1990. A. How long B. How much C. How soon D. How often 解析 句意:-你在这所学校有多长时间了?-自1990年以来.how long“多久”,对一段时间进行提问;how much“多少;多少钱”,对不可数名词或价格进行提问;how soon“多久以后”,对将来的一段时间进行提问;how often“多久一次”,对频率进行提问.根据答语可知选A. 答案 A 知识点二 since的用法 教材原文 Because I've had it since I was a baby.因为我还是个婴儿的时候就拥有它了. 本句中since是连词,意为“自从;自······以来”,引导时间状语从句,从句多用一般过去时,主句多用现在完成时. He has skated for quite some time since we came here.自从我们来到这儿,他已经滑冰很长时间了. She has been living a hard life since her husband died.自从她丈夫死后,她一直过着艰苦的生活. 拓展 since还可以用作介词,后接名词或名词短语. He's been off work since Tuesday.自星期二以来他一直没上班. 例2(2020安徽铜陵枞阳白梅中学期末)- ________ have you learned to play the piano? -________ five years ago. A. How long; For B. How often; For C. How long; Since D. How soon; Since 解析 句意:-你学习弹钢琴已经有多长时间了?-自五年前以来.“since+过去的时间点”是现在完成时的标志词,相当于“for+一段时间”.用How long对一段时间进行提问,故答案选C. 答案 C 知识点三 “one's+序数词＋birthday”的用法 教材原文 For example, he has owned a train and railway set since his fourth birthday, and he played with it almost every week until he was about seven.比如,他从四岁生日起就拥有了火车和铁路套装玩具,他几乎每个星期都玩它,直到他七岁左右. “one's+序数词＋birthday”意为“某人······岁生日”.“on one's+序数词＋birthday”是固定搭配,意为“在某人······岁生日时”. I received some presents on my tenth birthday.我在十岁生日时收到了一些礼物. 例3(2020黑龙江龙东地区中考)My son is________ years old. Today is his________ birthday. A. twelve; twelve B. twelve; twelfth C. twelfth; twelve 解析 考查数词的用法.句意:我儿子十二岁,今天是他的十二岁生日.twelve“十二”,是基数词;twelfth“第十二”,是序数词.由句意可知,第一个空用基数词;第二个空表示“······岁生日”,用序数词.故选B. 答案 B 知识点四 to be honest的用法 教材原文 ...but, to be honest, I have not played for a while now.······但是,说实在的,现在我已经有一段时间没 玩了. to be honest 是不定式短语作插人语,意为“说实在的”.类似短语有:to tell(you