Hybridoma Technology ( Production , Purification , and Application )
Ingles exposicion
1. FACULTY OF POLITICAL AND
ADMINISTRATIVE
SCHOOL OF LAW
TOPIC: PAST SIMPLE
MEMBERS:
BELEN QUINTANILA
PAMELA QUINTANILLA
2.
3. In the first case, irregular verbs are so
called not to follow a certain pattern and
in this case must be studied individually.
accept accepted
answer answered
arrive arrived
ask asked
belong belonged
change changed
clean cleaned
climb climbed
close closed
To form the past simple regular verbs, add the
suffix "-ed" to the verb. The shape is the same for
all persons (I, you, he, she, it, we, THEY).
4. exceptions:
For verbs that end in an "e", just add "-d.
examples:
change → changed
believe → Believed
If the verb ends in a short vowel and a consonant (except "y" or
"w"), double the final consonant.
examples:
stop → stopped
commit → Committed
With verbs that end in a consonant and a "y", change the "y"
with an "i".
examples:
study → Studied
try → tried
5. (SIMPLE PAST TENSE)
Simple Past tense is used to describe actions that
have happened at an earlier time and have
already completed, for example:
Sujeto + verb past+ complement
I liked the movie last night.
He pronounced the words well.
You noticed Julia's new dress.
You missed me last week.
They arrived this morning.
She used the correct word.
She invited him to her party.
6. NEGATIVE SENTENCES WITH SIMPLE PAST TENSE: Both the
negative interrogative as auxiliary DID is used as it is the past form
of the verb "TO DO" and accompanies the main verb in its infinitive
form. Negations can be used in the contracted form of DID or DID
NOT.
Subject+ did + infinitive verb
7. 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.
8. EXAMPLE:
Did I like the movie last night?
Did you notice Julia's new dress?
Did you miss me last week?
Did they arrive this morning?
Did she use the correct word?
Did we wait for you after class?
Did she invite him to her party?
Did I expect to see her yesterday?
Did they receive a letter this morning?
9. Yes, no answers (positive) yes, no aswers (negative)
Yes, I did No, I didn't
Yes, you did No, you didn't
Yes, he did No, he didn't
Yes, she did No, she didn't
Yes, it did No, it didn't
Yes, we did No, we didn't
Yes, they did No, they didn't
10. • Partícula interrogativa + did
+ sujeto + verbo conjugado
• What did you sing?
¿Qué cantabas?
• wh questions:
what
where
who
when
why
whose
how
which
"Wh-Questions" (using words like "What", "When" and
"Where") are also created using the auxiliary did before the
subject (or moving the verb "To Be", as explained above).
Then, add the "WH-questions" in the beginning.
"
'Wh' Questions
where did I go?
what did you play?
what did he cook?
why did she listen?
when did it rain?
where did we eat?
how did they travel?