名词.n,book,pen,map,boy, 　　形容词good,fine,great,beautiful 　　动词sit,come,do,have,cry,laugh, 　　代词this,that,they,we,us,he,she,it,these, 　　副词well,quickly,wonderfully,carefully 　　介词in.on,under, 　　连词and,or,but, 　　冠词a,an,the, 　　叹词oh,Hellow,hi,well, 　　数词one,two,first,hundred,thousand