汽车英语3—汽车基本构造篇 Unit 5.ppt

尚辅网 尚辅网 尚辅网 Section II Reading 2. Spring types include leaf springs, coil springs, air springs, and torsion bars. 3. Because the leaf spring consists of a series of thin leaves, one on top of another, it does not break when bent. 弹簧种类包括钢板弹簧、螺旋弹簧、空气弹簧和扭杆弹簧。 ______________________________________________________ 由于钢板弹簧是有一组薄的钢片组成，一片叠加在另一片上，在弯曲的时候不会被折断。 ______________________________________________________ 尚辅网 Section II Reading 4. The coil spring is very elastic and will compress when a weight is put on it. 5. When the rear wheels hit a hole or a bump in the road, the springs expand or compress to absorb the shock. 螺旋弹簧有较好的弹性，当有重量施加在弹簧上时，弹簧将被压缩。 ______________________________________________________ 当后车轮在道路中遇到坑或撞击时，弹簧伸张或压缩来吸收震动。 ______________________________________________________ 尚辅网 Section III Grammar Alice, you water the flower today. You speak first. You go and tell him, Chris. 带主语的祈使句：直接在动词原形前加主语，可用于命令或要求。 Be quiet，please. Be a good boy! Please have a seat here. Let me help you. Do listen to the teacher. 祈使句的基本构成方式：动 词原形+其他成分。 有时候祈使句的动词前面可 以加上do，just，always等词 加强语气。 例句 用法 Imperative Sentence 尚辅网 Section III Grammar Hands off. None of your business. No smoking! 无动词的祈使句：有些祈使句中无需动词。有些可用no开头,用来表示禁止性的祈使句。 Be seated. Be gone! Get refreshed by sleep. 被动语态的祈使句中,被动祈使一般由be，get等系动词加过去分词形式组成。 Dont forget me! Dont be late for school! Dont let him go. Let him not go. 祈使句的否定形式：在动词原 形前加don’t. Let型的否定式有两种:“Dont + let + 宾语 + 动词原形 + 其它成 分”和“Let + 宾语 + not + 动词 原形 + 其它成分”。　 尚辅网 Section III Grammar Mail the letter today, will you? Let’s phone her now, shall we? Let us know your address, will you? If you want help, let me know, would you? Jim, you go there to help him, will you? 祈使句的反意疑问句通常用will you, won’t you, would you等,let’s…其后反意疑问句总是用shall we。而let us…其后的反意疑问句要根据不同情况分别使用will you和shall we。 Long live our friendship! 倒装祈使：一般用于表示祝愿 的句子当中，常含虚拟语气。 　 尚辅网 Section III Grammar Task 1: Translate the following into Chinese. Come t