1．祈使句中的省略
(You) Come early tomorrow.
(I) Thank you for your help.
(You) Open the door，please.
2．在口语中的省略
—How is your mother today?
—(She's) Much better.
(Is there) Anything else?
3．在感叹句中的省略
What fine weather (it is)!
What beautiful flowers (they are)!
How wonderful an idea (it is)!
