这个要看do是做实义动词，还是助动词了。具体根据上下文来确定。如果是助动词用法的话，那就直接加动词原形。如果是实义动词的用法，是直接跟宾语的，那么如果是加动词的话，就要用动词的-ing形式，即动名词形式。
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.
do作为助动词用法
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.
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