Question

在什么情况下，用do，does来引导疑问句

Answer 1

• 对不含be、have的一般现在时态的语句提问时（有具体动作的动词的一般现在时语句），用do和does。

• 以I、you和复数名词为主语的，用do引导

  I(/you/we/they/teachers/pigs) come here.

  DO I(/you/we/they/teachers/the pigs)  come here?

• 以单数名词及he/she/it为主语的，用does引导,同时动词第三人称变回原型。

  She(/he//it/My teacher/the pig) comes here.

  Does She(/he//it/My teacher/the pig) come here?

Answer 2

在句子没有be动词的时候，变为疑问句需要借助do或者does

Answer 3

当句子表示经常发生的动作或行为时，句子通常用一般现在时态。结构为:主语+行为动词+其它。此时变成一般疑问句则用do,does开头。比如:I go to school by bike.变成Do yon go to school by bike?
比如:He goes to school by bike.变成Does he go to school by bike?