短語(yǔ)詞組短語(yǔ)to fail to do sth 不能作某事not fail to do sth 一定能夠某事;務(wù)必做某事;一定能做某事never fail to do sth 從未失敗sb fail to do sth 某人沒(méi)能做某事can 't fail to do sth 不能不做某事 返回 fail to do sth