八年级下册英语重要知识点归纳M1重要语法：感官性系统词：feel(摸起来)、look(看起来) 、smell(闻起来)、taste(尝起来) sound(听起来),后接形容词作表语，不能接副词。
构成疑问句或否定句要借助助动词。
The silk dress feels soft. The flowers look very beautiful. Does it smell nice? The song doesn’t sound be noisy.感叹句结构：①What+ a/an+形容词+单数可数名词+（主语+谓语）！What an interesting book it is!②What+形容词+不可数名词/复数名词+（主语+谓语）！What bad weather it is today!③ How +形容词/副词+主语+谓语！How fast he is running!How delicious it smells!How I miss the days we spent together!我多么怀念我们一起度过的日子！3.I’m afraid+句子:恐怕…… I’m afraid he has no time today.4. be done 做好了Is your homework done?你的作业做好了吗？Dinner is done!晚饭做好了！5. have a try 试一试；尝一尝6.have a sweet tooth 喜好甜食7.thanks for=thank you for+名词/动词-ing。
因……而感谢你。
Thanks for your help.=Thanks for helping me .Thank you for inviting me to your party.8. hear from…=get /receive a letter from…收到……的来信9.can’t wait to do sth.迫不及待去做某事I can’t wait to see you.10.人+ spend+时间（in）doing sth.。
=It takes +人+时间+to do sth. 某人花费多少时间做某事He spent two days (in) reading the novel.=It took him two days to read the novel.11.too也（置于句末，前加逗号）also也(置于居中be或情态动词之后) as well也（置于句末，前不加逗号）12.be proud of…以……为豪My parents are proud of me.13. How do you feel about+名词/动词-ing？=What do you think of+名词/动词-ing？你觉得……怎么样？How do you feel about the film?=What do you think of the film?How do you feel about coming to China?=What do you think of coming to China?14. be afraid of+名词/动词-ing：害怕…. I am afaid of dog/going out at night.be afraid of doing sth.=be afraid to do sth. 害怕做某事She is afraid of sleeping alone at night.= She is afraid to sleep alone at night.15. What does sb. look like?某人长得怎么样（问外表）答：short/tall/young/pretty…What is sb like?某人性格怎么样？（问性格或品质）答：quiet/nice/strict/kind..-What does your English teacher look like? -He is tall with pair of glasses.-What is your English teacher like? -He is strict but friendly.M2重要语法：现在完成时（一）：描述过去已经、曾经或还没有做过某事的经历或体验，对现在造成的影响。
结构：have/has +动词过去分词——(否定) haven’t/hasn’t +动词过去分词含义：已经/曾经做过… 还没有做过…标志词：already、ever、never、yet、just等。
I have seen the movie.我已经看过这部电影。
（我现在了解该电影了。
）He has already finished his homework.他已经完成了作业。
（他可以交作业了）We haven’t had dinner yet. 我们还没有吃晚饭。
（我们现在饿）Have you ever entered a speaking competition?你曾经参加过演讲比赛吗？（变一般疑问句把have/has 提到句首）Yes, I have./No, I haven’t.2.enter a competition=take part in a competition参加竞赛3.help sb.(to) do sth.帮助某人做某事He often helps me learn English.4. afford sth.买得起某物I can’t afford the new bike.afford to do sth. 付得起钱去做某事=have enough money to buy sth.She can’t afford to go to school.她没钱去上学。
5. 停下来去做某事stop doing sth.停止做某事I’m tired. Let’s stop to have a rest.我累了。
让我们停下来休息一下吧！It’s time for class now. Let’s st op talking.上课时间到了！让我们不要讲话了！6. make up编写make up a story编故事make it/them up (代词要放中间)7.invite sb. to do sth.邀请某人做某事8. fifteen-year-old十五岁的（复合形容词中的名词不能加s ,作定语）fifteen years old 十五岁（短语，不能作定语，常作表语）He is fifteen years old.=He is a fifteen-year-old boy.9.at the moment =now此刻（常用于现在进行时中）10. have/has been to+某地：曾经去过某地（人已经回来，常与次数连用）have/has gone to +某地：到某地去了（人未回，不能与次数连用）have/has been in +某地：在某地呆/逗留（常与for +时间段连用）I have been to Hong Kong twice.He isn’t here now. He has gone to the USA.We have been in China for 20 years.11. be different from…与…..不同12.find it +形容词+ to do sth. 发现做某事是….的（it 是形式宾语，无义，替代后面不定式）I find it easy to learn maths. 我发现学数学很容易。
Tony finds it hard to speak Chinese. 托尼发现说汉语很难。
13. so far到目前为止（常用于现在完成时）So far I have learnt 3，000 English words.14. all over the world=around the world 全世界15.count down 倒数M31. already已经（常用于现在完成时肯定句句中或句末）I have already knownhimyet尚，还（常用于现在完成时否定句或疑问句句末）Has it arrived yet？just 刚刚（常用于现在完成时肯定句句中）They have just arrived.2. What are your up to?=What are you doing?你在忙什么？3.I’m not sure how to make it.= I’m not sure how I can make it.4. That’s why ….那就是……的原因了。
5. in order to+动词原形：为了… He works so hard in order to get the best score.句子=in order that+句子：为了…He works so hard so that (in order that) he can get the best score.6. there is——(现在完成时形式)there has been 已经有/存在there are——(现在完成时形式)there have been已经有/存在There have been many buildings in our village since 15 years ago.7.go around围绕……转8. none of +名词复数/宾格+动词（单/复形）：……没有一个（既指人也指物）no one +动词（单）=nobody（仅指人，不与of 连用，常用于who提出的问题）None of the students know(s) the anwer. 没有一个学生知道答案。
-How many people are there in the room? –None.一个也没有（强调数量）No one knows the answer. –Who’s in the classroom?- No one.没有人（强调有没有人）9. be called…被称为……10.a small part of… …….的一小部分municate with…与……联系12.finish doing sth.完成做某事13.write back回信M4重要语法：1.现在完成时（二）：描述一个动作或状态从过去持续到现在乃至将来有多长时间。