直接在名词前使用时,用some.
some单独用作代词也可以
Give me some books.
Would you like some apples?OK,give me some.
如果名词前出现了冠词,指示词或形容词性物主代词,又或者要在代词前使用some的话,就要多加一个of
Some of the/these/my apples are green.
Some of them are happy.