ask (somebody) if （向某人）询问某事

　　You never asked me if I lived in Germany. 你从来就没问过我有没有在德国住过。

　　He asked me how much I loved my wife. 他问我有多么爱我的妻子。

　　I want to get this report done before I go home.  我想在回家前把这些报告都搞定。

　　Feel free to ask if you have any questions.  如果有问题的话，随时可以找我。