Simple past vs past perfect

We use Past Simple for an action which happened at a definite time in the past; the time is stated, already known or implied.

• Yes

• No

Tags

CCSS.L.3.1E

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1C

CCSS.L.5.1D

We use Past Simple for actions which happened immeditely one after the other in the past.

• Yes
• No

We use Past Perfect for an action which happened before another past action or before a stated time in the past.

• Yes
• No

Chuck had left the house before I  ________________(CALL).

• called
• had called

We left the town 7 years ago because my parents  __________________ (FIND) better jobs.

• had found
• found

The old house was still there but it ______________ (NOT CHANGE) very much.

• changed
• hadn't changed

Bill Gates _______ computer programs before he _______ from highschool.

• had done / graduated

• did / had graduated

I ______ to the shop to buy the shirt I _____ the day before.

• had gone  /   saw
• been   /  had bought 
• went  /  had seen

By the time his friend _____ the conclusions, Luke ______ all the assignment. 

• finished   /   had already sent
• sent  /  had already finished
• had send   /   finished

I went to bed after I.....off the television.

• switched

• had switched