1) close与closely

close意思是"近"； closely 意思是"仔细地"

• He is sitting close to me.
• Watch him closely.

2)　late 与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与deeply

deep意思是"深"，表示空间深度；deeply时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与highly

high表示空间高度；highly表示程度，相当于much

• The plane was flying high.
• I think highly of your opinion.

5)　wide与widely

wide表示空间宽度；widely意思是"广泛地"，"在许多地方"

• He opened the door wide.
• English is widely used in the world.

6)　free与freely

free的意思是"免费"；freely 的意思是"无限制地"

• You can eat free in my restaurant whenever you like.
• You may speak freely; say what you like.