this,is和is.this怎么区分谁在谁在后,这是我的狗,this,is,my,dog但能不能is,this,my,dog呢,这个应该有区分吧,明白说下方法!

this,is和is.this怎么区分谁在谁在后,这是我的狗,this,is,my,dog但能不能is,this,my,dog呢,这个应该有区分吧,明白说下方法! what shape is this?和want shapes are these?怎么区分? 这些怎么回答?Is this your son?Is this boy your son?Is Tom your son?怎么区分？ Is this怎么造句 this is和this are的区别 This is is this This is THIS IS this is this is Is this Tom?怎么回答 ____sweater is this怎么填空 this is because 怎么造句? this is it 怎么读? this is nothing怎么翻译 这个怎么读? this is Is this Pat?怎么答?