Time Tense.

Presente Simple – (Simple Present Tense)

subject	+	auxiliary verb	+	main verb
		do		base

There are three important exceptions:

1. For positive sentences, we do not normally use the auxiliary.
2. For the 3rd person singular (he, she, it), we add s to the main verb or es to the auxiliary.
3. For the verb to be, we do not use an auxiliary, even for questions and negatives.

Examples:

• 
  
• He does not [doesn't] eat vegetables .
• She works in a hospital.
• Elephants live in Africa.  
• Bogota is in Columbia. 
• Do children like animals? 

• Adults do not [don't] know everything. 

He seds a letter today                               They send a letter today
He doesn't send a letter today                  They don't send a letter today
Does he send a letter today?                     Do they send a letter today?

Pasado Simple – (Simple Past Tense)

She cleaned her house. Ella limpió su casa.

I broke the window. Yo rompí la ventana.

Use the Simple Past to express the idea that an action started and finished at a specific time in the past. Sometimes, the speaker may not actually mention the specific time, but they do have one specific time in mind.

Verb	Past Simple
be	was (I, he, she, it) / were (you, we, they)
do	did
have	had

• 
  

• I didn't see a play yesterday.
• Last year, I traveled to Japan.
• Last year, I didn't travel to Korea.
• Did you have dinner last night?
• She washed her car.
• He didn't wash his car.

He/We swam in the pool yesterdayHe/We didn't swim in the pool yesterdayDid he/we swim in the pool yesterday?

                        Present Progressive

Sujeto	Auxiliar (to be)	Gerundio
I	am	talking, eating, learning, doing, going...
He, She, It	is	talking, eating, learning, doing, going...
You, We, They	are	talking, eating, learning, doing, going...

• I'm going to the party tonight.
• He's not [He isn't] coming to class tomorrow. 
• Are you working next week? 

Affirmative	Negative	Interrogative
I was going	I was not going	Was I going?
You were going	You were not going	Were you going?
He was going	He was not going	Was he going?
She was going	She was not going	Was she going?
It was going	It was not going	Was it going?
We were going	We were not going	Were we going?
You were going	You were not going	Were you going?
They were going	They were not going	Were they going?