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1·It's + adj. + to do sth. ask sb. about sth. by doing STH. What's your favorite......? The best way to do STH.

做某事的……的。向某人询问某事通过做某事你最喜爱的……是什么？做某事的最好方式。

2·In case the card doesn't work, you should contact technical department of this company and ask sb. professional to repair. Do not dismember it by yourself!

当卡出现故障时，应由专业人员进行维修，或联系本公司技术部门解决问题，切不可自行拆卡。

3·Tell (ask) sb to do STH.

要求(吩咐)某人做某事。

4·D. ask sb. to do sth.

意为“请某人做某事”，固定搭配。