this的复数,those的单数

18.b:it's a bear.它是一只熊.a: what's this? 这是什么?17.
复数句是: 总结:(he / she / it 复数都是 ,和 this/that 的复数不同.
2014-02-23新人教版七年级上册英语unit2this is my sister课件2ppt
i will go to the zoo this weekend.
句型转换.1. this is his brother. (改为复数句子) ______ ar.