初二英語(yǔ)上冊(cè)語(yǔ)法復(fù)習(xí)詳解（12）-“單數(shù)”
12) 英語(yǔ)中的單數(shù)
1.主語(yǔ)的第三人稱單數(shù)形式，即可用he, she, it代替的。如：
he,she, it，my friend, his teacher, our classroom, Tom, Marys uncle
2.名詞有單數(shù)名詞和復(fù)數(shù)名詞。如：
man（單數(shù)）---men（復(fù)數(shù)） banana（單數(shù)）---bananas（復(fù)數(shù)）
3.動(dòng)詞有原形，第三人稱單數(shù)形式，-ing分詞，過(guò)去式，過(guò)去分詞。如：
go---goes---going---went---gone
work---works---working---worked---worked
watch---watches---watching---watched---watched
當(dāng)主語(yǔ)為第三人稱單數(shù)的時(shí)候，謂語(yǔ)動(dòng)詞必須用相應(yīng)的第三人稱單數(shù)形式。
如：
The boy wants to be a sales assistant.
Our English teacher is from the US.
Their daughter makes her breakfast all by herself.
