Present Perfect употребляется со словами, выражающими
L J незаконченный период времени.
Ex. 7* Say w hat you have done / haven’t done this w eek
(m onth, year).
• to study the Present Perfect Tense,
• to have business talks with the customers,
• to speak with friends on the phone,
• to watch some interesting programmes on TV,
• to read some messages in English,
• to visit some production plants outside Moscow,
• to make some good contracts,
• to go on business to some Russian cities,
• to work on the computer very much,
• to discuss a lot of business problems with the director
• to see an amusing comedy,
• to go to the sports centre.

I have studied the Present Perfect Tense,

I have not had business talks with the customers,

I have spoken with friends on the phone,

I have  watched some interesting programmes on TV,

I have not  read any messages in English,

I have not  visited any production plants outside Moscow,

I have not  made any good contracts,

I have not been on business to any Russian cities,

I have not  worked on the computer very much,

I have not  discussed a lot of business problems with the director.

I have  seen an amusing comedy,

I have been to the sports centre.