language,grade,subject前加what还是which,为什么(急~)

language,grade,subject前加what还是which,为什么(急~) language,grade,subject前加what还是which,为什么 which grade还是what grade What grade are you in?I'm in first grade,first前为什么不加the呢? 向grade(年级)提问用what还是which What subject和Which subject的差别 是which language do you speak?还是what language do you speak I an in (Grade Two)划线部分提问,是用What grade are you in?还是Which gr subject是可数名词为什么what is your favorite subject?不加s 是what is your favorite subject?还是which is your favorite subj 为什么你是哪个年级?译为what grade are you in?而不译为which grade are you in Which subject do you like best?还是Which subjects