Achsah/Be動詞與助動詞

常用助動詞

基本助動詞

• do / does / did
• have / has / had

情感態度助動詞

• will / would
• can / could
• may / might
• shall / should
• must
• ought to

助動詞用法差異表

	Do	Have	情態
時間變化	O	O	X
主詞三單變化	O	O	X
接原形動詞	O	X	O
接過去分詞	X	O	X
疑問句開頭	O	O	O
否定句 not 前	O	O	O