Question

James has just arrived,but i didn't know he (was coming ) until yesterday.为什么填was co

James has just arrived,but i didn't know he (was coming ) until yesterday.为什么填was coming而不填came

Answer 1

因为主句用的是过去时态，故宾语从句一般也要用过去的时态，除非宾语从句指的是客观真理（要用一般现在时）。如：
He didn't tell me yesterday how old he was. 昨天他没告诉我他多大了。
Mary said that she would marry nex tweek.玛丽说她下周结婚。
They told me just now that he was cooking.他们刚才告诉我他在做饭。
The teacher told us that the earth goes around the sun.老师告诉我们地球绕着太阳旋转。