Unit5知识点及易错题整理2022-2023学年牛津译林版八年级英语上册

八上五单元知识点及易错题整理 1. When doing/While doing。 连词+分词的垂悬结构 When doing sth, sb do sth. 当某人做某事时，某人做了某事。 要求：doing的动作执行者和sb是同一个人。 相似的用法：while, since, before 等 例题：When _______ (face) trouble, will you still be brave and calm? 2. none的用法 none 与 no one / nobody 及 nothing的辨析 no one / nobody 常用来指人，作主语时谓语动词要用单数形式； nothing 常用来指物，作主语时谓语动词也要用单数形式； none 可指人也可指物. 注意： 1 ） none 可与 of 连用表示范围，而 no one / nobody 及 nothing 不可。 2 ） none 可用来回答 How many / much…？ 的特殊疑问句；而 no one / nobody 及 nothing 则分别用来回答 Who…？ 和 What…？ 的特殊疑问句。如： — How many birds are there in the tree？ — None. — What is in the box？ — Nothing. — Who is in the classroom？ — No one / Nobody. 3 ） none 可用来回答“ any + 名词”构成的一般疑问句：而 nobody 和 nothing 则分别用来回答由 anybody 和 anything 构成的一般疑问句。如： — Is there any bread left？ — No，none at all. — Is there anything in the sky？ — No，nothing. 4 ） none 可用来指代前面提到过的人或物；如无指代时可用 no one / nobody 及 nothing .如： We had three cats once — none of them is alive now. 例题：1. -Any tickets for Friday? -Sorry, we’ve got ____________ left. 2. -Two tickets for Sunday, please! -Sorry. There is ______ left. A. nothing B. none C. some D. no one 3. -What do you think of your new classmates? - Most of them are kind, but ______ is as good to me as Sandy. A. all B. both C. none D. neither 4. -The old man has three sons but ___________ of them is willing to take care of him. - How could the sons do that? That’s too bad. 3. 词性变化（mean, weigh, sad, danger） mean：动词，注意过去式是meant 名词：meaning,注意可数名词。 形容词：meaningful weigh: 动词，名词weight sad：形容词， 副词是sadly, 名词是sadness danger：名词，常考固定搭配in danger。 形容词:dangerous 例题： 1. None was willing to share his ________ so he walked away ________. (sadly) 2. Look! There is a big fire in the building and he’s still inside. It’s very _________. He is in great danger now. (danger) 4. 情态动词的用法 may, can, must表示猜测的区别： 1. 表示有把握的推测时，肯定句用must (一定，准是)，否定句用can’t (不可能，一定不)。must(can’t) + 动词原形，表示对现在情况的推测。 2. 表示把握不大的推测即可能性时，