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be
内容提示:be+动词不定式(即 be+to do sth.)的用法如下:1.表示按计划或安排要做的事。例如:When are you to leave for home?你什么时候回家?She is to be married next month.她将于下个月...
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【be
解释:be challenged to do 被挑战做某事
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【be
解释:be serious to do 认真去做
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【be
解释:be down to do 准备做某事
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be equipped to do
解释:be equipped to do 有能力做某事
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be polite to do
解释:be polite to do 礼貌地做某事
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be guaranteed to do
解释:be guaranteed to do 保证做某事
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be duty to do
解释:be duty to do 有义务做某事
be to do的用法
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