grammar

冠詞︰article: a, an, the

介詞︰preposition: on, in, under, off, over, at, by...

連接詞︰conjunction: but, and, because, although, since, unless...

主詞︰subject

代名詞︰prounoun: he, she, it...

及物動詞︰transitive verb

不及物動詞︰intransitive verb