1) I didn't see him because I devoted myself to study.

3 worthwhile

a. It is worthwhile to do sth.值得做......事情

It is worthwhile to study hard and learn English well because that means you'll have a good job in the future.

努力学好英语是是值得的,因为那就意味着在未来有一个好工作

It is worthwhile to go abroad because you make more money.

到国外去是值得的,因为你可以赚更多的钱

It is heard that film is not very good. Is it worthwhile to see it?

我听说那个电影不太好,值得去看吗?

It is not worthwhile to give him some presents. He is so selfish.

不值得给他一些礼物,他那么自私

I don't know what it is worthwhile to do.

我不知值得做什么

b.扩展：

Be worth doing sth.值得做......

He is worth respecting.

他值得尊敬

Be worthy of值得做......，但加being+动词的过去分词

He is worthy of being respected.

他值得尊敬

练习:

翻译下面句子

1) 长城值得去看

2) 这本杂志值得读

3) 学习IT是值得做的

答案：

1) The Great Wall is worth visiting.

The Great Wall is worthy of being visited.