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be used for 意为被使用于。例如:
*The room is used for doctors.这房间是医生使用的。
be used to 用作谓语,意为”习惯于“,可用于各种时态。这里to是介词。
*He is used to the cold weather.他习惯了寒冷的天气。
*I am used to teaching English.我对教英语已习惯了。
used to是情态动词,它表示后跟的动词的动作是”过去经常“发生的,而
这动作现已不复发生。例如:
*They used to come on foot,but they don‘t do that now.他们过去
经常步行来,现在不了,他们经常乘车来。
注:be/get used to 和used to 要注意区分:
*be/get used to是”习惯于“,后接名词,动名词也可以接代词,用于各种
时态,to是介词。
used to 的疑问句和否定有下列几种:
*He usedn't to come by bus.
*He didn't use to come by bus.
*Used he to come by bus?
*Did he use to come by bus?
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