听众 “蓝之信” 想知道 “should、ought to” 和 “be supposed to” 在用法上的不同。要想分清它们的用法并不难，先来看一句话：“We _____ leave now.（我们该走了。）” 在空白处应该填 “should、ought to” 还是 “are supposed to”？这里最好用 “should”。这是为什么？
OUGHT TO is a semi-modal verb because it is in some ways like a modal verb and in some ways like a main verb. For example, unlike modal verbs, it is followed by TO, but like modal verbs, it does not ...
“should” 通常用来“给建议”，比如： 🔹 That dress looks great on you. I think you should buy it. 这件裙子很合适你，我觉得你应该把它买下来。 当我小的时候，能跳过篱笆。 🔹 If we try to master English, I think we could travel around the world.
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