1、他由朋友陪同去听音乐会。

He was accompanied to the concert by his friend.

2、他已说服她改变决定。

He has argued her out of the decision.

3、在某种程度上，他的成功是由于幸运。

In part， his success is due to good luck. 由于is because / is brought about by

4、按照他的建议，手续已经大大简化。

According to his suggestion，the procedures have been greatly simplified.

5、电台预报明天天气会变冷。

The radio station predicts that it will be cold tomorrow. Broadcasting

6、运动的定义是位置或地方的改变。

Movement is defined as the change of position or place.