Unit 1 Space
have(有)is(是(第三人称单数))are(是(复数;第二人称单数))earth(地球;世界)dream(梦)friendly(友好的)has(有)were((are的过去式)是)更多单词 >>
Unit 3 Sports
happy(高兴的)first((1st)第一的)second((2nd)第二的)third((3rd)第三的)run(跑;奔跑)fifth((5th)第五的)tenth((10th)第十)won((win过去式)赢;获胜)更多单词 >>
Unit 4 Birthday
autumn(秋天)spring(春天)summer(夏天)winter(冬天)season(季节)April(四月)August(八月)December(十二月)更多单词 >>