请问以下的句子何者正确？

(1) I have heard that Ken went abroad.

(2) I heard that Ken has gone abroad.

解答如下：

A:在宾语从句中，如果主句谓语动词为“一般现在时态”“现在完成时态”“一般将来时态”，从句可根据实际情况使用任何时态

I have heard that Ken went abroad.

I heard that Ken has gone abroad.

I hear that Ken went abroad

I hear that Ken has gone abroad

I hear that Ken will go abroad next day

I hear that Ken is going abroad

以上都是正确的表达

B:在宾语从句中，如果主句谓语动词为“一般过去时态”从句只可以使用过去某种时态（客观事实，普遍真理除外）

I heard that Ken had gone abroad.

I heard that Ken would go abroad

I heard that Ken was going abroad.

The teacher said that the earth goes around the sun

以上都是正确的表达