Present, Present Progressive, Past

Yesterday,

• I buy my friend a gift.

• I am buying my friend a gift.

• I bought my friend a gift.

Every day,

• I go to school at 8:00 am.

• I am going to school at 8:00 am.

• I went to school yesterday.

Last year,

• I eat breakfast in the morning.

• I am eating breakfast in the morning.

• I ate breakfast in the morning.

Every day,

• I sing in my room.

• I am singing in my room.

• I sang in my room.

Right now,

• he studies English

• he is studying English.

• he studied English.

Every Monday

• I have a headache.

• I am having a headache.

• I had a headache.

Last night,

• I say good night to my mother.

• I am saying good night to my mother.

• I said good night to my mother.

Right now,

• she sits in class.

• she is sitting in class.

• she sat in class.

Every evening,

• I take my dog for a walk.

• I am taking my dog for a walk.

• I took my dog for a walk last night.

Right now,

• I tell you the truth.

• I am telling you the truth.

• I told you truth.