The waiters were rude and unhelpful, the manager ditto.

　　這些服務(wù)員態(tài)度生硬，服務(wù)不周，經(jīng)理也一樣。

　　It is unhelpful to extrapolate general trends from one case.

　　根據(jù)一個(gè)案例來(lái)推斷總的趨勢(shì)是沒(méi)有用的。

　　People always complain that the big banks and big companies are unfriendly and unhelpful

　　人們總是抱怨大銀行和大公司不友善、不愿提供幫助。

　　If the bank is unhelpful take it up with the Ombudsman.

　　銀行要是不肯幫忙，就去找申訴專員。

　　The criticism is both unfair and unhelpful.

　　批評(píng)既不公正又無(wú)濟(jì)于事。