1. My skates are broken.I can´t afford to buy a new pair.
    我的溜冰鞋坏了.我买不起新的溜冰鞋.

2. But we can´t afford it.
    可我们买不起，

3. Not because he cannot afford, or shuns their material comforts,
    这并不是因为他们付不起钱，也不是为了躲避物质享受，

4. I can´t afford to pay that much right now. May I pay by installments?
    我现在一时付不起那么多钱, 我可以分期付款吗?