do一般表示什么词 do一般表示什么
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do词性
do是用于一般现在时的'助动词,did则是用于一般过去时的助动词。done是do的过去分词。do还有实义动词(有实在意义的动词)的解释:做,干,等。口语中,do 的否定式通常用缩写形式。例如,do not 略作don't,did not 略作didn't。助动词无法与be动词、动词原形一同使用。
do的用法
1. do用于一般现在时
例句:I often do my homework in the evening.
2. does用于第三人称单数的一般现在时
例句:He does his lessons every day.
3. did用于一般过去时
例句:They did homework yesterday.
4. doing常用于现在进行时或者非谓语动词(暂时不提)
例句:He is doing his homework now.
5. done 常用于完成时,被动态或者非谓语动词(暂时不提)
例句:
He has done his homework.
He had done his homework before he went out.
His homework is done.
作为助动词,常用于疑问句和否定句。
1. 一般疑问句
例句:Do you like English?
2. 选择疑问句
例句:Does he go to school by bus or by bike?
3. 特殊疑问句
例句:How do you go to school?
4. 反义疑问句
例句:You like English, don't you?
5. 否定句
例句:I don't like English.
另外,也可以用于表示强调, 此时需要重读。
例句:He does need your help. (does重读,强调确实需要帮助)
还有,也可以代替其他的动词,使句子更简练。
例句:
Who cleaned the windows?
Tom did.
本文到此讲解完毕了,希望对大家有帮助。