Where do you swim?中为啥要加do?

Where do you swim?中为啥要加do? Do you like swim? 10.Where ________ her friend __________ (swim) now,do you know? Do you swim还是 Do you swimming Do you like _____(swim)? Do you like ( ) (swim) 为什么. How do you often swim? my hobby is swimming中swim为什莫加do ing 1.i want to go swimming 2.where do you swim 为什么一个加ing一个不加ing where do you think you are为什么是宾语从句 where do you live? where what you do? Where do you Where do you 急, Where do you get where do you leave What do you like to do besides swim?to do besides swim.这个不定时短语在句子中作什么成分? Do you like------(swim)正确形式