Be
1、be on
on 表明所处的状态，意为“为…工作，在……服务”可用be a member of, work for, belong to 替换。
I’m on the school team.我属于校队。
She is on Times newspaper.她在时代报社工作。
[应用]完成句子（上下句同意）
①Which team do you belong to ?Which team______you_____?
②She is a member of the city team.She______ ______ the city team.
Key: ①are,on ②is, on
2、be out/ put out
be out 指“（灯、火）熄灭”，强调状态。put out 意为“熄灭、扑灭”，强调动作。如：
Is the fire out ?
Office workers tried to put out the fire, but it was impossible to control it.
3、be remembered as… 作为……而被人们怀念
He will always be remembered as a national hero.
4、be seated
意为“坐下”（=sit down）,是正式用语，而sit down是非正式用语。
如：Please be seated, ladies and gentlemen.
5、be up to
to是介词，后接名词、代词或动名词。这一短语有以下几个常用意思：
（1）从事于、忙于，有时含有“密谋干坏事”之意。如：
What is he up to now?他现在在干什么？
He is up to no good.他没干好事。
（2）由……负责，常用It作主语。如：
It’s up to you to decide whether to go or not.是去还是不去由你决定。
It’s up to us to give them all the help we can.我们理应尽力帮助他们。
（3）胜任、适于。如：
He is not up to his work.他不胜任他的工作。
（4）直到、以至。如：
up to now 直到现在
Between the hours of midnight and 6 a.m.，the hurricane crossed the southeast corner of England with winds of up to 160km/h.从午夜时分到清晨6点之间，飓风横扫英格兰的东南角，风速高达每小时160公里。
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