八年级英语上册短语及语法精讲：Unit 6

八年级英语上册短语及语法精讲：Unit 6Unit 6 I’m going to study computer science短语： grow up be able to in common take up 短语用法： want to do sth. practice doing sth. learn to do sth. promise to do sth. remember to do sth. love to do sth. be going to 的用法 1） be going to + 动词原形——表示将来的打算、 计划或安排。 常与表示将来的 tomorrow, next year 等时间状语或 when 引导的时间状语从句连用。各种句式变换都借助 be 动词完成，be 随主语 有 am, is, are 的变换，going to 后接动词原形。 肯定句： 主语 + be going to + 动词原形 + 其他。He is going to take the bus there. 否定句： 主语 + be not going to + 动词原形 + 其他 I?m not going to see my friends this weekend. 一般疑问句： Be + 主语 + going to + 动词原形 + 其他 肯定回答： Yes, 主语 + be. Are you going to see your friends this weekend? 否定回答： No, 主语 + be not. Yes ,I am. / No, I?m not. be going to + 动词原形 keep on doing sth. finish doing sth help sb. to do sth. agree to do sth. every day the meaning of at the beginning of hardly ever be sure about make sure send…to… the meaning of have to do withdifferent kinds of write down too…to…特殊疑问句： 疑问词 + be + 主语 + going to + 动词原形 + 其他？ What is he going to do this weekend? When are you going to see your friends?2) 如果表示计划去某地，可直接用 be going to + 地点 We are going to Beijing for a holiday. 3) 表示位置移动的动词，如 go , come, leave 等常用进行时表示将来。 The bus is coming. 4) be going to 与 will 的区别： ① 对未来事情的预测用“ will + 动词原形”表达，will 没有人称和数的变化，变否定句要在 will 后面 加 not, 也可用 will 后面加 not,或者缩略式 won?t, 变一般疑问句将 will 提至 句首。 Will planes be large in the future? Yes, they will. / No, they won?t. My aunt is leaving for Beijing next week.②will 常表示说话人相信或希望要发生的事情，而 be going to 指某事肯定发生，常表示事情很快就 要发生。 I believe Lucy will be a great doctor.③ 陈述将来的某个事实用 will. I will ten years old next year. ④表示现在巨大将来要做的事情用 will. I?m tired I will go to bed. ⑤ 表示意愿用 will. I?ll tell you the truth. ⑥ 表示计划、打算要做的事情用 be going to, 而不用 will. 1 promise vt. 保证，许诺。有三种结构： 1)promise to do sth. _____My mother promised to buy a piano for me. 2)promise sb. sth. _____ My aunt promised me a bike. 3)promise + that 从句_____ Tom promises that he can return on time. promise n. 允诺， 诺言 Lily is a dishonest girl. She never keeps a promise. 2.when 与 while 的区别： when 表示“当…时候”，既指时间点，又指一段时间，when 引导的时间状语从句中的动词可以是终 止性的也可以是延续性的。When the teacher came in, the students were talking. When she arrives, I?ll call you. while 表示“当…时候”，仅指一段时间，从句中的动作必须是延续性的，一般强调主从句的动作同时 发生， while 还可以作并列连词，意为“ 而、却”，表示对比关系。 Lisa was singing while her mother was playing piano. Tom is strong while his younger brother is week. 3. practice vt. 练习， 后接名词，代词或 v-ing 作宾语。 Your elder sister is practicing the guitar in the room. 常跟 v-ing 作宾语的动词有： 考虑建议盼原谅：consider, suggest/advise, look forward to, excuse, pardon. 承认推迟没得想： admit, delay/put off, fancy. 避免错过继续练：avoid, miss, keep/keep on, practice. 否认完成能欣赏： deny, finish, enjoy, appreciate. 不禁介意与逃亡： can?t help , mind, escape. 不准冒险凭想象： forbid, risk, imagine. 4. everyday 与 every day 区别 everyday adj. 每天的 在句中作定语，位于名词前。 This is our everyday homework.every day 副词短语， 在句中作状语，位于句首或句末。 He reads books every day.