一般现在时的句式变化口诀: 一般现在时,句式常变化。首看人称后,是be还是动。若是be动词,方式最简单。 be后加not,就是否定句。置be于句首,便是一般问。再加疑问词,则是特殊问。
人称后无be,若要变句式,单三用does,not紧随后,句尾加问号,选对疑问词,无论be和动,划线包含动,一句现两do,后是实意动,问人用who,方式和程度,询问哪一个,不可how
are放在复数的名词或代词之后，否定句在be后加not，一般疑问句将be提前。回答:Yes,人称代词+be./No,人称代词+be+not.
如:Are you a student? --Yes, I am./ No, I am not.
Are they teachers? --Yes, they are./ No, they aren't.
用法如下：
are you ok?
do you like playing basketball?
is she a teacher?
is he tall?
does she dance well?