___ you (_____), you get good grades.
When you (study/practice/etc), you get good grades.
Ben (go) to London next week if he (get) a cheap flight.
Ben will go to London next week if he gets a cheap flight.
If he (be) my friend, I (invite) him to my birthday party.
If he was/were my friend, I would invite him to my birthday party.
If he (become) a musician, he (record) a CD.
If he had become a musician, he would have recorded a CD.
I don't have a car.
I wish I had a car.
Imperative: (need, let)
If you need anything, let me know.
If her boyfriend (phone / not) today, she (leave) him.
If her boyfriend does not phone (call) today, she will leave him.
If Phuong (study) harder, she (be) better at school.
If Phuong studied harder, she would be better at school.
We (not/get) married if we (not/go) to the same university.
I didn't see John at the party.
I wish I had seen John.
Fact: (erupts, pours)
When a volcano erupts, lava pours down.
If they (study / not) harder, they (pass / not) the exam.
If they do not study harder, they will not pass the exam.
If they (have) enough money, they (buy) a new car.
If they had enough money, they would buy a new car.
They (be) late if they (not/take) a taxi.
They have been late if they had not taken a taxi.
She won't answer the phone.
I wish she would answer the phone.
Fact: (burn, taste)
If you burn cookies, they taste bad.
You (be able / not) to sleep if you (watch) this scary film.
You will not be able to sleep if you watch this scary film.
If you (drive) for Grab, you (earn) a little extra money.
If you drove for Grab, you would earn a little extra money.
I (call) you if I (not/forget) my phone.
I would have called you if I had not forgotten my phone.
I can't concentrate on studying now.
I wish I could concentrate on studying now.
Imperative: (need, ask)
If you need help, just ask!
Susan (can / move / not) into the new house if it (be / not) ready on time.
Susan cannot move into the new house if it isn't ready on time.
If Minh (have) more pocket money, he (ask) Linh out for dinner.
If Minh had more pocket money, he would ask Linh out for dinner.
We (come) if we (be) invited.
We would have come if we had been invited.
He hasn't called.
I wish he had called.