1．My father bought me an umbrella yesterday．（改為否定句）

2．That is Daniel's key ring．（改為同義句）

3．She is too weak to take part in the activity．（改為同義句）

4．I think she is as slimmer as my sister．（改錯(cuò)，保持句意不變）

5．Mr Wu said，“I'm satisfied with the result．”（改為間接引語）