close；closely
close, closely这两个词都可以用作副词，close表示“靠近”、“紧紧地”，closely则表示“紧密地”、“严密地”、“密切地”。如：
1)I went closer, and saw clearly a tall man in the moonlight．
2)Come close, I want to tell you something important．
3)The policeman followed the strange man closely．
4)The scientists got closely in touch with the astronauts．
