She eats an apple.
主语:She
谓语:eats
宾语:an apple
He studies English every day.
主语:He
谓语:studies
宾语:English
The dog chases the cat.
主语:The dog
谓语:chases
宾语:the cat
I bought a book yesterday.
主语:I
谓语:bought
宾语:a book
She sings a song beautifully.
主语:She
谓语:sings
宾语:a song
They are watching a movie now.
主语:They
谓语:are watching
宾语:a movie