discuss the mode of payment 协商付款方式
a: mr. wang, we haven't discussed the mode of payment.
b: you know, mr. forster, this is a really large purchase . i'm afraid we can't pay off at one time. we have to pay by insurance.
a: do you mean you prefer a deferred payment?
b: yes, mr. forster.
a: when do you start the payment then?
b: we'll start our payment in half a year and the total amount will be paid off within 2 years by three installments .
a: we can accept that, but you have to pay the interest.
b: all right.
a: shall we sign the agreement now?
b: ok, let's sign it.
重点讲解：
1. purchase 购买
2. deferred 延期的，缓召的
3. installment 就职，装设，分期付款