Unit 4 语法知识 2022-2023学年人教版八年级英语下册

八年级下Unit 4 Why don't you talk to your parents？ 提建议的常见表达方式： Why don' t you do=Why not do（动词原形）为什么不？提建议 E.g.: Why don' t you talk to your parents? = Why not talk to your parents? 其他提意见的句型： What/how about +doing sth？做某事怎么样？ Shall we +do sth 让我们做某事好吗？ Let' s +do sth 让我们做某事吧 Would you mind +doing sth 你介意做某事吗？ You had better (not)+do sth 你最好（不）做某事 E.g.: You' d better not be late for class. allow v.允许，准许 allow sb to do sth 允许某人做某事 sb be （not） allowed to do sth 某人（不）被允许做某事 allow doing sth =sth be allowed 允许某事 E.g.: Please allow me to introduce myself. E.g.: We don’t allow smoking in the hall. 练习： 1.Excuse me, sir? No one is allowed （swim） -Sorry I didn't know that。 2.We don't allow (take ) magazines out,but you can copy the article you need on the machine over there. 3.My parents don't allow me (watch) TV on school nights. Fight n. & v. 打架 考点1：和某人打架 get into a fight with sb=have a fight with sb =fight with sb 考点2：fight-fought-fought (不规则动词的过去，过去分词i变成 ou) wrong adj.有毛病，错误的 考点 1： What' s wrong with sb/sth? 某人或某物怎么了（常用于口语） What’s wrong with you？“怎么了？〞的其他表达，如下： What’ s up？ What's the matter/trouble/problem? 考点2：修饰复合不定代词 something, anything, nothing 后置，表示出事了，有毛病了。 E.g. There is something wrong with my bike. until 连词，引导时间状语从句。 考点1：直到，用于肯定句，与延续性动词连用 E.g. I slept until 6:00. 我一直睡到6点。（可用till替换，更口语化） 考点2：not until 直到…才，用于否定句，与非延续性的动词连用 E.g. I didn’t wake up until 6:00. 我直到6点才睡觉。 (否定句中的until可以与before互换) 考点3：not until 在句首，句子要倒装 E.g. Not until she told me did I realize it.直到她告诉我才意识到。 翻译： Peter was working until 12:00 last Monday.上周一皮特工作到12点。 Peter did not start working until 12:00 last Monday.直到上周一12点皮特才开始工作。 so that 连词 考点1：以便，为了，引导目的状语从句，且从句常含有情态动词 (can, could, should 等） E.g. You should talk to him so that you can say you' re sorry. 考点2：如此…以至于，引导结果状语从句 E.g. He was so tired that he fell asleep soon. I found my sister looking through my things yesterday. 考点1：find sb doing sth 发现某人正在做某事 考点2：look through 浏览，翻看 I guess you should tell her to say sorry