for what I cantell

例句：

1. 1.For what I cantell, the weather is not good.
   就我所知，天气不好。
2. 2.She asked me for what she could afford.
   她问我能负担得起什么。
3. 3. He told me that he had for what he could do.
   他告诉我他尽了所能。