【正文】
ents.但是am與not不能縮寫。如果主語(yǔ)是單數(shù)名詞、不可數(shù)名詞或單數(shù)第三人稱代詞(he,it)時(shí),:Myisteacher.Hea他是一名學(xué)生。It is a dog. 它是一只狗。That is a cup . 那是一個(gè)杯子。He=s,mother=mother39。但是This而is與not可縮寫成t。isn39。a這不是一本書。他(he),be動(dòng)詞用法歌 be動(dòng)詞真?zhèn)ゴ?,生出is, am, are。單數(shù)名詞用is,復(fù)數(shù)名詞全用are。變否定,更容易,be后not莫忘記。1 用動(dòng)詞be (am, are, is)填空 Lucy and Lily ____ Who ___ they? The white shirts _____ Their bikes ____ under a big tree. How old _____ you? are B are。 isThey ____ new students. We ____ not new. A are 。 am isWhere ____ his pencils? Oh, in his ba