that 在限制性定语从句中既可指人又可指事或物。在下列情况下,只能用that 来引导定语从句: 1. 先行词是all , much, few, little, everything, anything, nothing 等不定代词时。例如: Is there anything that you want to buy? 2. 先行词被all, few, little, much, ev...