Can
What you think it means: What is permissible。你以为单词的含义是：可行的。What it really means: What is possible。单词的真正含义是：可能的。
This is one you have to nip in the bud in childhood because it’s much harder to correct in adulthood. When you can do something, you have capacity within you to perform that action regardless of whether or not you actually do it. I can bang my head into my desk but I absolutely will not do it. When people use can incorrectly it is because they mean to use the word "may".When you ask someone if they can open the door, you did not ask them to open the door. You asked them if they were capable of opening the door. If you wish for them to perform the task, you should ask if they will open the door. When you ask if you can have something, you’re not asking someone to give it to you. You’re asking if you have the capacity to own it. If you need something, ask if you may have it。这个单词的使用必须在儿童时就开始注意，一旦用错，成年以后就很难纠正了。当你can(可以)做某事时，即意味着不管实际行动与否，你自身都有能力去采取那个行动。我can(可以)把头撞到桌上，但我绝对不会这么去做。有时人们错用can这个单词，是因为他们本想表达may(可能)。当你问别人是否can(可能)开门时，你其实并没有要求对方一定得开门，只是在询问对方能不能开门;要是你希望对方开门，你就会直接问“是否开门”了。当你问对方是否can(可能)有某事物，你其实并没有要求对方把它给你，你只是在问对方有没有拥有那个东西的可能性。如果你需要某物，你会直接问“是否可以拥有它”。
