换成will的话,在语法上是没错的.
但would和will在句子中说表达的意思稍微有点不同.
用would有一种不确定的赶脚,而用will的话,语气就会比较肯定了.
That would be very interesting.那可能会相当有趣吧.
That would be very interesting.那将会十分有趣的.