No hay clase el 31 de Agosto de 2013 para los programas de niños y jóvenes

Queridos estudiantes,

Debido a los recientes inconvenientes con el paro nacional, el instituto de lenguas UIS ha decidido no tener actividades el día sábado 31de Agosto de 2013. Escribanme a mi correo en caso de que tengan cualquier duda osocaro28@gmail.com.

Atentamente,

Carolina Diaz

past perfect

PAST PERFECT

The past perfect tense expresses action in the past before another action in the past. This is the past in the past. For example:

•    The train left at 9am. We arrived at 9.15am. When we arrived, the train had left.

Look at some more examples:

•    I wasn't hungry. I had just eaten.

•    They were hungry. They had not eaten for five hours.

•    I didn't know who he was. I had never seen him before.

•    "Mary wasn't at home when I arrived."
"Really? Where had she gone?"

MOREOVER

If the Past Perfect action did occur at a specific time, the Simple Past can be used instead of the Past Perfect when "before" or "after" is used in the sentence. The words "before" and "after" actually tell you what happens first, so the Past Perfect is optional. For this reason, both sentences below are correct.

Examples:

•   She had visited her Japanese relatives once in 1993 before she moved in with them in 1996.
• She visited her Japanese relatives once in 1993 before she moved in with them in 1996.

EXTRA EXERCISES

http://www.perfect-english-grammar.com/past-perfect-exercise-1.html

http://www.ego4u.com/en/cram-up/grammar/past-perfect-simple/exercises

http://www.englisch-hilfen.de/en/exercises/tenses/past_perfect_simple_past.htm

http://www.englishpage.com/verbpage/verbs11.htm

http://www.englishpage.com/verbpage/verbs12.htm

While and When

While vs. When

Clauses are groups of words which have meaning, but are often not complete sentences. Some clauses begin with the word "when" such as "when she called" or "when it bit me." Other clauses begin with "while" such as "while she was sleeping" and "while he was surfing." When you talk about things in the past, "when" is most often followed by the verb tense Simple Past, whereas "while" is usually followed by Past Continuous. "While" expresses the idea of "during that time." Study the examples below. They have similar meanings, but they emphasize different parts of the sentence.

Examples:

• I was studying when she called.

• While I was studying, she called.

EXTRA PRACTICE

http://www.englishexercises.org/makeagame/viewgame.asp?id=734

http://www.scribd.com/doc/15062360/Past-ContinuousPast-Simple-When-While

Past continuous

PAST CONTINUOUS 

 USE 1 Interrupted Action in the Past

Use the Past Continuous to indicate that a longer action in the past was interrupted. The interruption is usually a shorter action in the Simple Past. Remember this can be a real interruption or just an interruption in time.

Examples:

• I was watching TV when she called.

• When the phone rang, she was writing a letter.

USE 2 Specific Time as an Interruption

In USE 1, described above, the Past Continuous is interrupted by a shorter action in the Simple Past. However, you can also use a specific time as an interruption.

Examples:

• Last night at 6 PM, I was eating dinner.

• At midnight, we were still driving through the desert.

USE 3 Parallel Actions

When you use the Past Continuous with two actions in the same sentence, it expresses the idea that both actions were happening at the same time. The actions are parallel.

Examples:

• I was studying while he was making dinner.

• While Ellen was reading, Tim was watching 

television.

EXTRA PRACTICE

http://es.slideshare.net/rapunzelim/whenwhile-past-continuous-tense-past-simple

http://www.englisch-hilfen.de/en/exercises/tenses/past_progressive_statements.htm

http://autoenglish.org/gr.pascon.i.htm  

http://www.perfect-english-grammar.com/past-continuous-exercise-1.html

Simple Past

SIMPLE PAST

Form of Simple Past

	Positive	Negative	Question
no differences	I spoke.	I did not speak.	Did I speak?

For irregular verbs, use the past form (see list of irregular verbs, 2nd column). For regular verbs, just add “ed”.

Exceptions in Spelling when Adding ‘ed’

Exceptions in spelling when adding ed	Example
after a final e only add d	love – loved
final consonant after a short, stressed vowel or l as final consonant after a vowel is doubled	admit – admitted travel – travelled
final y after a consonant becomes i	hurry – hurried

Use of Simple Past

• action in the past taking place once, never or several times. Example: He visited his parents every weekend.

• actions in the past taking place one after the other. Example: He came in, took off his coat and sat down.

• action in the past taking place in the middle of another action. Example: When I was having breakfast, the phone suddenly rang.

• if sentences type II (If I talked, …). Example: If I had a lot of money, I would share it with you.

EXTRA PRACTICE

http://www.myenglishpages.com/site_php_files/grammar-exercise-simple-past.php

http://www.ego4u.com/en/cram-up/grammar/simple-past/exercises

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_mix.htm

http://www.perfect-english-grammar.com/past-simple-exercise-7.html