1. https://youtu.be/SaF2qF5OkWs
BORROW is to get something from someone
LEND IS to give something

2. Some ways to ask for favors:
1. Request with if clauses and the present tense
    Is it OK if and Do you mind if ?  are followed by the present simple.
    Example:
Is it OK if I borrow your camera?
Is it OK if you get married with me?
Is it OK if she calls you tonight?
Do you mind if I use your car?
Do you mind if he drives you to work?
2.Request with if clauses and the past tense
   Would be OK if ? Would you mind if ? are followed by past tense
Would it be OK if I picked you tonight?
Would it be OK if I used your video camera?
Would you mind if I came your house?
BORROW is to get something from someone
LEND IS to give something to someone

3. 3. Request with Gerunds (-ing)
    Would you mind (with out if ) is followed by a gerund.
 Would you mind lending me your car?
Would you mind doing TOEFL Test next week?
Would you  mind NOT forgetting your task conference call?
4. Request with if clauses and Modals
    Wonder + if is followed by a modal
I wonder if I could borrow some money?
I was wondering if you would mind letting me use your car?