1)be back/in/out 回来/在家/外出2)be at home/work 在家/上班3)be good at 擅长4)be careful of 当心,注意,仔细5)be covered with 被……覆盖6)be ready for 为……作好准备7)be surprised (at) 对……感到惊讶8)be interested in 对……感兴趣9)be born 出生1...
be good at sth.擅长做某事
be absent from 缺席
be annoyed at对……恼怒
be in charge of负责
be available to sb.可被某人利用或得到
at one’s expense由某人支付费用
be concerned about 对……担心
attribute…to…把……归因于……
be likely to...