改错： ①yesterday,my father told me that the earth went around the sun ②the boy's parentswere very grateful for the doctor

1. went ----goes 客观的事实或真理用一般现在时态。
2.for---to be grateful to 对。。。感激 是短语结构。
祝学习进步！

正确的应该是：1. Yesterday, my father told me that the earth goes around the sun.(因为 地球绕着太阳转 为真理，所以不用变时态)
2. The boy's parents were very grateful to the doctor.

①yesterday,my father told me that the earth went around the sun
went---goes
②the boy's parents were very grateful for the doctor
for---to