1. SIMPLE PAST VS.
PRESENT PERFECT
Unit 4, pg. 24

2. Comparing simple past and present perfect
Simple Past
Present Perfect
Yesterday

Today
now
FINISHED

past
now
UNFINISHE
D
 used with these time phrases:  has/have + p.p
yesterday, last
 used with these time phrases:
(month, week, year etc.), in
recently, lately, so far this
2005 (past date)
(week, month, year, etc.), sinc
e

3. Simple past cont.
 Examples:
 I washed my car yesterday.
 Our family went on a vacation last
month.
 I graduated from high school last
year.
 Key Words: yesterday, last week, last month

4. Present perfect cont.
 Examples:
 I have lived in Korea for 4 years.
 Hyun-Jin Ryu has pitched for the
Dodgers since 2013.
 She has studied English since middle
school.
 Key words: recently, since (designated
period), for (duration)

5. Simple Past vs. Present Perfect
 Compare the meaning of these two
sentences:
1. Tim lived in Canada for 3 years.
2. Tim has lived in Canada for 3 years.


Which tense is used in sentence 1?
Simple
Past
Which tense is used in sentence 2?
Present
Perfect

6. Comparative view
 Tim lived in Canada for 3 years.
 Meaning: by using the simple past tense, we
explain the Tim formerly lived in Canada but
does not presently live there.
 Remember: simple past is used when the
situation is over!

7. Comparative view cont.
 Tim has lived in Canada for 3 years.
 Meaning: by using the present perfect
tense, we are showing that Tim lived in
Canada 3 years ago AND still lives there.
 Remember: present perfect connects the past
with the present!

8. Let’s practice!!!
 I have played (play) soccer since
middle school.
 It _has snowed (snow) for two days.
_____
 He __ lost
(lose) his key yesterday.