do，具有多种词性和词义。构成疑问句和否定句。代替动词。 用于加强语气。有做、干;、进行、表现等意思。下面小编告诉你英语助动词do的用法，大家一起来看看吧!
英语助动词do的用法：
1. 构成疑问句
Where do I pay? 我在哪儿付钱?
When do you start? 你何时动身?
How did you do it? 你是怎么做的?
How do you feel today? 你今天感觉如何?
Why do you keep on smiling? 你怎么老是笑?
How does the story end up? 这故事结局如何?
How does she stay so young? 她怎么能永葆青春呢?
When did you realise that the money was missing? 你什么时候发觉钱丢了?
2. 构成否定句
I don’t like football. 我不喜欢足球。
Please don’t annoy me. 请不要打搅我。
I didn’t arrive at the station early enough. 我到达车站不够早。
I don’t care how expensive it is. 我不在乎这件东西有多贵。
I didn’t meet either Jane or her husband. 简或是她的丈夫我都没遇见。
He washed the car. He didn’t polish it. 他冲洗了汽车。他没有擦拭它。
3. 构成倒装句
Never did he speak about his own merits. 他从不讲自己的功绩。
Very rarely did she receive letters from her brother. 她很少收到她兄弟的信。
Hardly had he arrived when she started complaining. 他一到家，她就抱怨起来。
Never did he think the book would be finished so soon. 他可没想到这本书会这么快看完。
Seldom has a devoted teacher been so splendidly rewarded. 一位忠诚的教师很少受到如此丰厚的报答。
助动词do 在祈使句中的强调用法：
有时可在祈使句前加上助动词do (常重读)，以表示说话人想特别强调他所说的话。这样用的祈使句具有以下用法：
1. 表示强调的请求。如：
Do come with us. 请一定要和我们一起去。
Please! Do be quiet a moment! 求求你们! 安静一会儿!
2. 表示委婉或客气。如：
Do try this fish. 请尝尝这鱼。
Do have another cup of coffee. 请再喝杯咖啡吧。
3. 表示不耐烦。如：
Do stop talking! 别说啦!
4. 希望说服对方。如：
Do help me with this maths problem. 务请帮我解答这道数学题。
代替动词的do是助动词还是实义动词：
▲用来替代动词的do是助动词，也可以说用作“代动词”，用来表示刚提到的动作，以避免重复。请看以下例句。
—Do you like Beijing? 你喜欢北京吗?
—Yes, I do. 是的，喜欢。(do用作代动词，代替like Beijing)
I always eat peas with honey. My wife never does. 我总是就着蜂蜜吃豌豆。我的妻子从来不这样吃。(does用作代动词，代替eat peas with honey)
▲但是要注意do so ,do it , do that这种结构，do不是助动词，而是实义动词，而且是及物动词。例如:
She hoped that he would search the room carefully and he did so. 她希望他仔细地检查房间，而他这样做了。
At night, when you really wish to go to sleep, you rarely manage to do so. 夜里当你正想入睡的时候，你却很少能成眠。
I could run after a bus and catch it twenty years ago, but I can’t do that now.
Mr Brown goes to the hospital for treatment every week: in face, he has been doing it ever since I have known him.布朗先生每周去医院治疗：事实上，自从我认识他依赖，他一直就是这样。
do和did的用法：
根据语义的需要，do 和 did 后面既可接名词作宾语，也可接动名词作宾语。
▲接名词作宾语：
I do my homework in the evening. 我晚上做作业。
I hope to be able to do the work. 我希望能干得了这项工作。
I’ll do the housework tomorrow morning 明天上午我来做家务。
▲接动名词作宾语：
It takes ages to do the shopping. 买东西真花时间。
She had to do some studying. 她得学习一会儿。
Which of us is going to do the washing up? 我们当中谁去洗碗?
We can do some sightseeing here. 我们可以在这里参观游览。
▲顺便说一句，do 的用法是很灵活的，比较以下do的用法：
do the room (打扫房间)
do the dishes (洗盘子)
do the windows (擦窗子)
do one’s teeth (刷牙)
do one’s hair (梳头)
do the vegetable (煮蔬菜)
do the fish (煎鱼)
do the beef (炖牛肉)
do the flowers (插花)
do science (学科学课)
do sums (算算术)
do military service (服兵役)
do a concert (听音乐会)
do Spain (游览西班牙)
do ten years (关了十年)
do one’s guests (招待客人)
do Hamlet (扮演哈姆雷特)
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