推荐回答（2个）
can在一般疑问句中或特殊疑问句中可以放在it的前头。
一般疑问句是指可以用yes或no来回答的句子。是疑问句的一种。在有can的一般疑问句中，通常会把can提前，it可以放在can的后面。
特殊疑问句指以特殊疑问词开头，对句中某一成分提问的句子。疑问词有who，what，which等。在含有can的特殊疑问句中，it可以放在can的后面。
CAN modal verb (ABILITY) 能力 strong /kæn/ weak /kən/
› to be able to 能，会
Can you drive? 你会开车吗？
She can speak four languages. 她会讲4门语言。
Can you read that sign from this distance? 你从这么远的距离能看清楚那标牌上的东西吗？
The doctors are doing all that they can, but she's still not breathingproperly.
医生们在竭尽所能，可是她仍然不能正常呼吸。
Do the best you can - I realize the circumstances are not ideal.
尽力而为吧——我知道情况不理想。
If the party is awful, we can always leave (= that would be one possible solution to our problem). 如果聚会很糟，我们总还可以离开。
"She's really furious about it." "Can you blame her (= I'm notsurprised)?"
“她对此确实很生气。”“你能怪她吗？”
can do US informal› used to say that you can and will do something 可以，行，好
"Will you mail this letter for me, please?" "Can do." “请你帮我把这封信寄了，好吗？”“行。”
"I need you to pick up the kids today." "Sorry, no can do (= no I can't)."
“今天我需要你去接孩子。”“抱歉，不行。”
can modal verb (PERMISSION) 允许
can modal verb (REQUEST) 要求
can modal verb (POSSIBILITY) 可能性
can modal verb (OFFER) 提供
can noun (CONTAINER) 容器
can noun (PRISON) 监狱
can noun (TOILET) 卫生间
can verb (FOOD) 食物
can verb (STOP) 停止
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