1) close與closely

close意思是"近"; closely 意思是"仔細地"

He is sitting close to me.

Watch him closely.

2)late 與lately

late意思是"晚"; lately 意思是"最近"

You have come too late.

What have you been doing lately?

3)deep與deeply

deep意思是"深"，表示空間深度;deeply時常表示感情上的深度，"深深地"

He pushed the stick deep into the mud.

Even father was deeply moved by the film.

4)high與highly

high表示空間高度;highly表示程度，相當于much

The plane was flying high.

I think highly of your opinion.

5)wide與widely

wide表示空間寬度;widely意思是"廣泛地"，"在許多地方"

He opened the door wide.

English is widely used in the world.

6)free與freely

free的意思是"免費";freely 的意思是"無限制地"

You can eat free in my restaurant whenever you like.

You may speak freely; say what you like.