八年级下英语重点知识点(解析版)

重点知识点

1.expect

①He expected to hear from Mary.他期待收到玛丽的来信。

(expect作动词,意为“预料；期待”。短语：期待做某事expect to__do sth.＝look forward to doing sth.)

②I expect my sister to come back early so that we can go to Jolin's concert together.我期待我的姐姐早点回来以便我们能一起去听蔡依林的音乐会。

(短语：期待某人做某事expect sb.to do sth.)

③They are in trouble,but I expect that they can deal with it themselves.他们正处于困境中,但是我期望他们能自己处理。

(用法：expect＋that从句期待……)

我不期望他会来我的生日聚会。I don't expect that he will come to my birthday party.

2.辨析thanks to与thanks for

①Thanks to Mr.Wang and the passengers,the doctors saved the man in time.多亏了王先生和乘客们,医生及时赶到救了那个男人。

(thanks to意为“多亏；由于；因为”,to是介词＋名词)

②Thanks for helping me!谢谢你帮助了我！

Thanks for your help!谢谢你的帮助！

(thanks for意为“因……而感谢”；for是介词＋名词/动词的ing形式)

多亏了老师们的帮助,我在英语方面取得了很大的进步。

Thanks to the teachers'help,I have made great progress in English.

谢谢你邀请我。Thanks for inviting me.

3.辨析be used to doing,be used to do与used to

①Most students are used to getting up early on weekdays.多数学生周一到周五习惯早起。

(用法：be(get/become)used to doing sth.习惯于做……)

②His knife was used to cut off his right arm.＝He used his knife to cut off his right arm.他用刀切断了右臂。

(用法：use…to do sth.使用……做某事；其被动结构为：be used to__do sth.被用来做某事)

③Lisa used to play computer games for a long time.莉萨过去常常会打很久的电脑游戏。

(用法：used to do sth.过去常常做某事)

4.run out(of)

①The petrol is running out.汽油快用完了。

(run out为不及物短语,主语为物,表示某物被用完了)

②We ran out of the petrol.我们用完了汽油。

(run out of为及物短语,主语为人,表示某人用完了某物.)

没有工作,他的钱很快用完了。His money ran out soon without a job.

5.辨析lonely与alone

①A lot of old people are lonely.很多老人很孤独。

(lonely作形容词,意为“孤独的”,既可以作表语,也可以作定语,如：a lonely man)

②I want to travel alone.我想独自旅游。

(alone作形容词或副词,只能作表语或状语,不能作定语。be alone＝be all by oneself)

6.make it adj.for sb.to do sth.

You helped to make it possible for me to have Lucky.你的帮助使得我有可能拥有“幸运儿”(狗名)。

I sometimes find it difficult to communicate with him.我有时候发现跟他沟通很困难。

(句型：make/find＋it＋adj.＋to do sth.“使得/发现做……怎么样”。在句型中,it作形式宾语,后面的形容词作宾语补足语,不定式作真正的宾语。)

7.difficulty

He has difficulty studying Chinese.他学汉语有困难。

If you have any difficulties,give me a call.如果你有任何困难,给我打电话。

(difficulty既可作可数名词“各种困难、难题、难事”,又可作不可数名词“艰辛；费劲”；短语：have difficulty doing sth.做某事有困难)

Everyone may have difficulty answering(answer)such difficult questions.

8.could

①—Could you play the piano when you were5years old？你5岁的时候就会弹钢琴了吗？

—Yes,I could./No,I couldn't.是的,我会。/不,我不会。

(could是can的过去式,表示过去的能力。)

②—Could you come here soon？你能快点来这里吗？

—Sure.当然。

—Could you please not close the door？你可以不关门吗？

—I'm sorry.I have to.对不起,我不得不(关门)。