Times Sentences

-Simple Present:

The structure to do a simple present sentence, is the next:

Subj, Pronouns + present verb + complement. For example:

+ She sends a letter everyday.

- She doesn't send a letter yesterday.

? Does she send a letter today?

Simple Past:

The structure in the Simple past, is the next: 

Subj. Pronouns + past verb + complement. For example:

+ They washed the car yesterday.

- They didn't wash the car yesterday.

? Did they wash the car yesterday?

Present progressive:

The structure, is the next: 

Subj. Pronouns  + verb to be+ verb with 'ing' + complement. for example:

+ We're smiling tonight

- We aren't smiling tonight

? Are we smiling tonight?

Future: Will

This is the structure: 

Subj. Pronouns + will + present verb + complement. For example:

+ I will cry without you 

- I wont cry without you.

? will I cry without you?

Future: Be going to

Structure is: Subj. pronouns + verb to be + going to + present verb + complement. For example:

+ He is going to sing today.

- He isn't going to sing today.

? Is he going to sing today?

Present progressive:

this is the structure: Subj, pronouns + have/has + past participle + complement. For example:

+ They've dream with a house

- They haven't dream with a house

? Have they dream with a house?

Active and Passive voice

*In active voice, the verb always going to be in present. For example:

- He DOES the homework.

*In a sentence, the action is the most important. This action, falls on the subj, pronouns.

In passive voice, we use the past participle in the verb. For example:

The homework is DONE by her.

Now, you can see examples, using all the times tenses, first in active voice, and after in passive voice:

Simple present:

*He do the homework.
- The homework is done by him.

Simple Past:

*She understood the lesson.

- The lesson is understood by her.

Present Progressive:

*He's drinking water.

- Water is being drunk by him.

Past Progressive:

*You were buying flowers to her.

- Flowers were being bought by you. 

Will:

*They will learn english.

- English will be learnt by them.

Be going to:

*He's going to speak Italian.

- Italian is going to be spoken by him.

Present perfect:

* He has eaten hamburgers for years.

- Hamburgers have been eaten by him for years.

Past perfect: 

*He had eaten hamburgers.

- Hamburgers had been eaten by him.