同位语从句中什么时候用that 什么时候用whether? 看两个同位语从句: 1.The mother was filled with anxiety _____ her daughter might be disabled by the accident. A.whether B.that C.what D.which 这题选A 2.A growing anxiety is disturbing the public _____ the economy will continuously decline. A.which B.that C.why D.whether 这题选B 问:同样都是anxiety的同位语,为什么 第一个选whether,而第二个选that