Past Simple vs Present Perfect
I __________ in Paris for 5 years (live, present perfect)
I have lived in Paris for 5 years.
I have lived here _______ five years.
I have lived here for 5 years.
You _______ be tired after that long trip!
You must be tired after that long trip!
If I _______time, I will call you.
If I have time, I will call you.
I didn't eat breakfast today because I ____ ______to buy bread yesterday.
I didn't eat breakfast today because I had forgotten to buy bread yesterday.
I ______ in Paris for 5 years. (live, past simple)
I lived in Paris for 5 years.
I have lived here _________2020.
I have lived here since 2020.
You ____________ go now or your mom will be worried.
You should go now or your mom will be worried.
If I _______you, I would apologize.
If I were you, I would apologize.
She was tired this morning because she ____ _____ __________ well last night.
She was tired today because she had not slept well last night.
I _________ at the bank since 2020. (work, present perfect)
I have worked at the bank since 2020.
I saw him two days _______.
I saw him two days ago.
He ________ get sick if he eats that rotten apple.
He might get sick if he eats that rotten apple.
If she had studied, she _____ _______ ________the exam.
If she had studied, she would have passed the exam.
They missed the train because they _____ _______ the house too late.
They missed the train because they had left the house too late.
Explain the difference:
I lived in London for 5 years vs. I have lived in London for 5 years.
The first is past simple because it is a completed action in the past. The second is present perfect because it is still true now.
Explain the difference:
"For" vs "Since"
"For" explains a duration. "Since" includes a starting point.
Explain the difference:
You must go vs. You should go.
You must go means you have no choice; you HAVE to do it.
You should go means it would be the best choice.
Explain the difference:
If I were rich vs If I had been rich
If I were rich is a present hypothetical. If I had been rich is a past hypothetical.
Explain the difference:
I didn't eat breakfast because I forgot to buy eggs vs
I didn't eat breakfast because I had forgotten to buy eggs.
The first sentence is the wrong tense because it doesn't describe the EARLIER action of having forgotten to buy the eggs.
Correct and explain:
I know him for ten years.
Either, I knew him for 10 years which means you don't know him now (past simple). Or, I have known him for 10 years which means you still know him now (present perfect).
Correct and explain:
I am here since two hours.
I am here for two hours. Use "for" to express the duration of time you are here.
Correct and explain:
You should to have told me earlier.
You should have told me earlier. The correct structure or formula is
"modal verb + have + past participle"
Correct and explain:
If I knew Spanish, I live in Spain.
If I knew Spanish, I would live in Spain or
If I knew Spanish, I could live in Spain.
If I knew Spanish is a present hypothetical so it takes a present conditional, I could live in Spain.
Correct and explain:
When I arrived, she already left.
When I arrived, she had already left.
The second clause should indicate the EARLIER action that the girl had ALREADY left.