possible, but not certain They ____ be at home (= Maybe they are at home.) to make general statements about what is possible You ____ easily get lost in this town. (= People often get lost in this town.) to make general statements about the past: It ____ be very cold there in winter. (= It was sometimes very cold there in winter.) to talk about someone's skill or general abilities He ____ swim like a fish. to talk about the ability to do something at a specific time in the present or future: Help! I ____ breathe to say that someone had the ability or opportunity to do something, but did not do it: She ____ ____ learned how to cook, but she didn't want to to ask for permission to do something: ____ we go home now? more formal and polite: ____ you please pass me the salt? to give permission: You ____ go to the cinema with your friends. to refuse permission or say that someone does not have permission: you ____ park here as a polite way of telling or asking someone to do something: ____ I have my bill, please? to make offers: ____ I do that for you? to make suggestions You ____ eat out tonight

can / could

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？