1
Can you borrow me your pen?
Can you lend me your pen?
Can I borrow your pen?
Use lend when you give something to another person for a period of time and expect them to return it: ‘Can you lend me your pen?’
Use borrow when you receive something from another person for a period of time and will return it later: ‘Can I borrow your pen?’
2
I borrowed €50 to Mark last week.
I lent €50 to Mark last week.
Mark borrowed €50 from me last week.
Use lend with to: ‘I lent €50 to Mark.’ You can also put the person before the thing without a preposition: ‘I lent Mark €50.’
Use borrow with from: ‘Mark borrowed €50 from me.’
See BORROW
3
My sister lended me her laptop for the weekend.
My sister lent me her laptop for the weekend.
Lend is an irregular verb. Its past simple and past participle are lent, not lended: ‘She lent me her bike.’ ‘I have lent him money before.’