unless,
英语单词,主要用作为
连词、
介词,作连词时意为“除非,除非在……情况下”,作介词时意为“除……之外”。
conj. 除非,除非在……情况下;若非,如果不
prep. 除……之外;除……之外
1.CONJ You use unless to introduce the only circumstances in which an event you are mentioning will not take place or in which a statement you are making is not true. 除非; 如果不