第1个回答 2010-03-23
If you have any questions，you can ask him anytime .望采纳
第2个回答 2010-03-14
If you have any questions，you can ask him anytime本回答被网友采纳
第3个回答 2010-03-17
you can ask him if you have any problem.
或者更简单点----
you can ask him if you want.
这两种说法都挺地道的。
第4个回答 2010-03-14
You can ask him all the time if you have any questions.
求求你，选我！
第5个回答 2010-03-14
If you have any questions,you can always ask him