（1）I am a student. （2）You are a student. （3）He is a student. （4）Are they students? （5）I am not a student. （6）You are not a student. （7）He is not a student. （8）I was a student. （9）You were a student. （10）He was a student. （11）Were they students? （12）I was not a student. （13）You were not a student. （14）He was not a student.
（15）I play tennis. （16）You play tennis. （17）He plays tennis. （18）Do you play tennis? （19）Does she play tennis? （20）I do not play tennis. （21）He does not play tennis. （22）You played tennis. （23）She played tennis. （24）Did he play tennis? （25）I did not play tennis. （26）Let's play tennis. （27）Play tennis. （28）Don't play tennis.(または You must not play tennis.) （29）He is playing tennis. （30）You were playing tennis. （31）I will play tennis.(または I am going to play tennis.) （32）He can play tennis. （33）You don't have to play tennis. （34）I want to play tennis. （35）I went to the park to play tennis. （36）They enjoyed playing tennis. （37）I have played tennis for two years. （38）Have you ever played tennis? （39）Tennis is played by many people.