Past tense

Past Tense
The past tense grammar rules in English are easier to learn than the present tense.  That's because the rules are the same for all subjects (I, you, he, she, it, we, they).  In theaffirmative you add -ed to the verb.  In the negative you add the word "didn't" (a contraction of "did" and "not").  To make a question you add the word "Did" to the beginning of the sentence.   -------------------------------------------------
Principio del formulario
If the verb already ends in an E, just add D. 
practice – practiced
Final del formulario-------------------------------------------------
Principio del formulario
If the verbs ends in a consonant and then Y, change the Y to an I and then add -ed. 
cry - cried
Final del formulario-------------------------------------------------
Principio del formulario
If the verb ends in consonant, vowel, consonant and the stress is on the last syllable, double the last consonant before adding -ed. Principio del formulario
plan- planneFinal del formulario
Unfortunately there are also many irregular past tense verbs (verbs that don't follow the -ed rule).  In the next several lessons we will be learning approximately 10irregular verbs in the vocabulary section of each lesson.  Here are this lesson's verbs.
drink - drank  (tomar)
eat - ate  (comer)
buy - bought  (comprar)
come - came  (venir)
drive - drove (manejar, conducir)
fly - flew  (volar)
go - went  (ir)
meet - met  (conocer)
see - saw  (ver)
swim - swam  (nadar)
I.Write sentences in the past tense.  If the verb is not in the list of tenirregular verbs above, it is regular (add -ed).
1.  They - study English at the university  studied
2. She - buy shoes at the mall  bought
 3. I - need a vacation  needed
4. She - eat pizza  ate
5.They - stop the car  stopped
6. They - drive to New York  drove
II.Change the sentence to negative.
1.The children played in the park.  The children didn´t play in the park
 2. The baby cried. ...