九年级英语第四单元知识点梳理

九年级英语第四单元知识点梳理 1 if 引导的非真实性条件状语从句即虚拟语气 虚拟语气表示说话人所说的话不是事 实 而是一种祝愿 建议或是与事实相反的假设等 如果要表示与现在或将来事实相反时 其虚拟语气结构为 虚拟类别 主句 从句 与现在事实相反 主语 would could should might 动词原形 If 主语 动词过去式 当 谓语动词时 be 时 要用 were If I were a bird I would fly freely in the sky 如果我是一只鸟 我会再天空中自由翱翔 If he had eough money he d buy a car 如果他有足够钱的话 他会买一辆车 2 pretend to do sth 假装做某事 I pretended to sleep just now pretend to be doing sth 假装正在干某事 The students pretended to be writing pretend 从句 假装 I pretended that I fell asleep 3 be late for 迟到 如 I am late for work school class party 4 a few 与 a little 两者表肯定意义的区别 a few 一些 修饰可数名词 He has a few friends 他有一些朋友 a little 一些 修饰不可数名词 There is a little sugar in the bottle 在瓶子里有一些糖 few 与 little 表否定意义 few 少数的 修饰可数名词 He has few friends 他没有几个朋友 little 少数的 修 饰不可数名词 There is little sugar in the bottle 在瓶子里没有多少糖 5 hundred thousand million billion 十亿 词前面有数词或 several 一词时要不能加 s 反之 则要加 s 并与 of 连用 表示数量很多 如 several hundred thousand million billion people 几百 千 百万 十亿人 hundreds of trees 上百棵树 8 what if 从句 如果 怎么办 要是 又怎么样 What if she doesn t come 要是 她不来怎么办 What if he knows 如果他知道了怎么办 9 add sth to sth 添加 到 I added some sugar to water 我把糖添加到水里 10 系动词与形容词连用 get nervous 变得紧张 feel shy 觉得害羞 look friendly 看起来 友好 11 too 形 副 to do sth 太 而不能 如 I m too tired to stand 我太累了而不能站 12 help with sth 如 They help with this problem help sb to do 如 They help you relax 他们帮助你放松 13 in public 在公共场所 Don t smoke in public 请不要在公共场所吸烟 14 energetic adj 活力的 She is a energetic girl 她是一个活力的女孩 energy n 活力 She has lots of energies 她有活力 15 ask sb to do 叫 做某事 ask sb not to do sth 叫 不要做某事 tell sb to do 告诉 做某事 tell sb not to do sth 告诉 不要做某事 16 start doing start to do 开始做某事 如 He started speaking to speak 他开始说 话 17 borrow sth from sb 从某人那里借来某物 I borrowed a book from Lily lend sth to sb lend sb sth 把某物借给某人 Lily lent a book to me 18 wait for sb 等某人 如 I am wait for him 我正在等他 19 introduce sb to sb 把某人介绍给某人 如 I introduced Lily to Anna 我把莉莉介绍给安娜 20 invite sb to do 邀请某人做某事 如 Lily invited me to go to her home for supper 莉莉邀请我去她家吃晚饭 21 have dinner supper 吃晚饭 have lunch breakfast 吃午餐 吃早餐 22 plenty of 修饰不可数名词 也可以修饰可数名词 许多 They have plenty of food apples 他们有许多的食物 苹果 23 give sth to sb give an apple to me give sb sth give me an apple 给我一个苹果 24 get along with get on with 进行 进展 The business is getting along very well 生意进展的很顺利 How are you getting along with your English study 你的英语学习进展的怎么样了 相处 Do you get along with your boss 你跟老板合得来吗 I m getting along very well with my classmates 我和同学们相处得很好 25 would rather than would rather than 宁愿 而不愿 前后连接两个动 词原形 否定形式为 would rather not do sth would rather than prefer to 但 prefer to 若连接两个动词 动词应为 v ing 形式 He would rather swim than play football He prefers swimming to playing football would rather 常单独使用 表示 宁愿做 He would rather watch TV at home rather than instead of 而不是 连接两个并列成分 前后对称 I d prefer to go to in summer rather than in winter 26 let sb down 让某人失望 Don t let your mother down 不要让你的妈妈失望 27 come up with sth 提出 想出 He came up with a good idea 他提出了一个好主意 catch up with sb 追上 赶上 Lily caught up with Anna 莉莉赶上了安娜 28 have experience doing 在做某事有经验 如 29 come out 出版 出来 The magazine comes out once a week 这种杂志每周出一次 30 by accident 偶然地 无意之中 Last week I cut my finger by accident 31 hurry to do 匆忙 I hurry to call the police 32 more than over 超过 34 look for 寻找 find 找到 发现 find out 指经过观察 探索 调查等弄清楚 弄明白 discover 指发现那些客观存在而不为人所知的实情 如科学上的重大发现 35 bring 带来 take 带走 fetch go and bring 去并拿来 36 What does do look