“だけ”和“しか”都是表示限定的副助词 ,在用法上有许多相通之处 ,也有很多不同之处。使用“だけ”时一般表示说话者就眼前的事实进行客观限定 ,而使用“しか”时一般表示说话者认为眼前的情况没有达到自己的预想值。总的来说 ,在表示限定时 ,“だけ”比“しか”的用法要广 “だ け” and “し か” are both qualified deputy ancillary words, there are many similarities in usage, there are many differences. The use of “だ け” generally means that the speaker objectively defines the immediate facts, whereas the use of “shi ka” generally means that the speaker does not think the immediate situation has reached his desired value. In general, “da け” is more widely used than “し ka” when expressing a limitation