back and forth 來回地,反復(fù)地
back of 在……后邊
back up 后備,支援
bare of 幾乎沒有,缺乏
be able to do 能夠
be around 差不多
be available to sb 可用,可供
be bound to 一定
be capable of doing 能夠
be concerned with 關(guān)心…,涉足…
be dying to 渴望
be fed up with/be tired of 受夠了
be in hospital 住院
be in season 上市的
be in the mood to do sth 想做
be pressed for time 時(shí)間不夠
be tied up with 忙于
be under the weather 身體不好
beat around the bush 拐彎沒角
beat the crowd 避開人群
before long 不久以后
behind schedule 誤點(diǎn)
bent on sth 下定決心做…
beside point 離題的,不相干的
beyond one s ability 超越某人的能力
beyond question 毫無疑問
book on reserve 須留的圖書
booked up 訂完了
bound for 開往
break down 拋錨
break though 突破
break up with/be through with/be finished with 和某人分手
bring about 使…發(fā)生
bring someone up to date/help someone catch up 幫某人趕上
by accident 偶然
by air 通過航空途徑
by all means 盡一切辦法,務(wù)必
by and by 不久,遲早
by chance 偶然,碰巧
by far 最,...得多
by hand 用手,用體力
by itself 自動地,獨(dú)自地
by means of 用,依靠
by mistake 錯誤地,無意地
by no means 決不,并沒有
by oneself 單獨(dú)地,獨(dú)自地
by reason of 由于
by the way 順便說說
by virtue of 借助,由于
by way of 經(jīng)由,通過