助動詞總共5個,do,be,have,shall,will。如果這些助動詞開頭,那就是一般疑問句。
例句
Do you swim every weekend?
Have you finished doing your homework?
Is he learning English now?
Will you go to school tomorrow?
Shall I go with you?
另外 be 動詞還是個 連繫動詞。若在句首,也是一般疑問句。
Are you a teacher?