含有情态动词can句型转换
一般疑问句:
can提前放在句首，第一人称变为第二人称，some变为any
eg: Ican sing a song.
Can you sing a song?
They can live in school.
Can they live in school?
We can go home by bus.
Can you go home by bus.
否定句:
can后加not，some变为any ,
can not = can't
eg: I can sing a song
I can't sing a song
They can live in school.
They can't live in school
1. 在变否定句时，直接在can后加上“not”,可缩写成can’t或cannot, 但不能写成cann’t.例如：
He can swim. → He can’t swim.
Emma can see the pen on the desk.→ Emma cannot see the pen on the desk.
2. 在变一般疑问句时，把can直接移到主语前（原主语的首字母改成小写，第一人称应变为第二人称）即可。例如：
I can see an orange on the table. → Can you see an orange on the table?
其回答可用Yes, OK或Certainly等作肯定回答；用No或Sorry等作否定回答。例如：
—Can you look after my books, please? 你能照看一下我的书吗？
—OK. 可以。
用Certainly回答。此时语气更为肯定。例如：
—Can I see your guitar? 我能看看你的吉它吗？
—Certainly. 当然可以。
