宾语从句：1.通常情况下,主句和从句的时态要相对应,如主句用过去式,从句也应该用相应的过去时态.如：The teacher said that she would play games tomorrow .2.客观真理除外,如：The teacher told us that our capital is Beijing .状语从句：1.通常情况下,主句和从句的时态要相对应,如主句用过去式,从句也应该用相应的过去时态.2.但如果主句是将来时,从句要用一般现在时代替将来时或主句是含有情态动词的句型,从句也用一般现在时.如：They will play basketball if the weather is sunny tomorrow .If it's rainy next Monday,we can stay at home .