无论我有多忙英语

你好！无论他有多忙No matter how busy he is

两种说法都可以 No matter how busy he is However busy he is （这里的however不是“但是”的意思）

Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea. 即使是最疲惫的河流，历经曲折，也终会安然入海。Even the weariest river winds somewhere safe to sea.

No matter how/However busy I am, I will call you back.