I believe in the teaching method.

我相信这种教学法。

It needs to renew teaching method.

这就需要更新教学方法。

I believe in this teaching method.

我相信这种教学法。

Thus task-based teaching method is used here.

因此，任务型教学方法是用在这里。

Our school has adopted a new teaching method.

我们学校采用了一种新的教学法。