1.His object is to be No.1.
2.Raining days discomfort me.or
Raining days make me feel unwell.
3.I don't consider him to be a famous writer.or
I don't regard him as a famous writer.
4.Is LiMing's dream the same as yours?
5.Look!Builders are building mansions!
6.my biggest / largest / most ambitious dream / goal / aim
7.on the building's top floor / on the top of the building