PRESENT TENSE
Present SimpleAffirmativeI/You/We/They clean the walls.

He/She cleans the walls.
NegativeI/You/We/They don´t do their homework.
He/She tidies his/her room every day.
QuestionsDo I/you/we/they feed the pets?
Does he/she rehearse the play?
Present ContinuousAffirmativeAll the students are listening to the radio.
The dog is barking a lot.
NegativeThey aren´t reading their books.
Anthony isn´t cooking his breakfast.
QuestionsWhat are you doing now?
Is John explaining the lesson at the moment?
Present simple vs Present ContinuousPRESENT SIMPLE

He dances well.
They sing beautifully.
Do they do their task?
PRESENT CONTINUOUS
He is dancing well.
They are singing marvellously.
Are they doing their task?
PAST TENSE
Past simple
Regular Verbs
AffirmativeHe travelled to Britain yesterday.
NegativeHe didn´t travell to Britain yesterday.
Irregular VerbsAffirmativeShe broke her leg two days ago.
NegativeShe didn´t finish the final task.
InterrogativeDid she bring the bag?
Did they put the apples on the table?
Past continuousAffirmative 
I was making tea at 8pm.
You were jumping from the bridge.
He/She/It was making some strange noises.
We/You/They were cooking breakfast.
NegativeI wasn´t making tea at 8pm.
You weren´t jumping from the bridge.
He/She/It wasn´t making some strange noises.
We/You/They weren´t cooking breakfast.
QuestionsWere you watching TV yesterday?
Was she singing the song at 9:30?
What were they doing at 5:15?
Past simple/Past ContinuousI heard a strange noise while I was making tea.
My dongs were sleeping in the yard when it started to rain.
The bird was singing when that old man appeared.
While the girl in blue was playing tennis, the music stopped.
Used to + infinitiveFUTURE TENSE
Going to + infinitive
AffirmativeI am going to play football.
NegativeShe isn´t going to meet us.
QuestionsAre they going to travel by plane?
Present ContinuousAre you going to London tomorrow?
Yes,I am/No, I´m not.
WillAffirmativeThe rainforest will disappear.
NegativeHumans won´t protect the environment.
QuestionsWill the president listen to his people?
Will vs going to + infinitive