这事做起来没有太大价值。

　　There isn't much merit in doing so.

　　There is no reason to do so.

　　I don't see the point (of doing that).

　　你还得再加把劲儿。

　　What you need is a little more effort. *effort “努力”、“尽力”。

　　You should put a little more effort into it. (你应该再加一把劲儿。)

　　You should try a little harder. (你应该再努力一点儿。)

　　有点自尊心吧!

　　Respect yourself.

　　我希望你事事要积极。

　　I hope you'll be more positive overall. *positive “积极的”。

　　I don't think I can do it. (我觉得我做不了。)

　　I hope you'll be more positive overall. (我希望你事事要积极。)

　　I hope you'll be more positive in every way.

　　I wish you'd be more positive.

　　You should be more optimistic. (希望你能乐观点儿。) *optimistic “积极的”、“乐天派的”。

　　你说得容易。

　　That's easy for you to say.

　　If you practice hard, you'll get a gold medal. (如果你刻苦练习，一定能够得金牌。)

　　That's easy for you to say. (你说得容易。)

　　你发什么牢骚?

　　There's no reason for complaints. *complaint “不满”、“抱怨”、“诉苦”。

　　There is no reason to complain.

　　There is nothing to complain about.

　　你脸上都写着呢呀!

　　It's written all over your face.

　　Did you pass the exam? (考试都通过了?)

　　How did you know? (你怎么知道的?)

　　It's written all over your face. (你脸上都写着呢呀!)

　　It's obvious. (明显地能看出来。) *obvious “一眼就能看出来的，明显的”。

　　I can see it in your eyes. *你的眼睛告诉了我。

　　我当然会生气了。

　　It's natural for me to get angry. *It's natural for...to “当然(自然)会”。

　　Why shouldn't I be angry?

　　I have a right to be upset!

　　My reaction is completely appropriate. (我这样的反应是自然的。) *appropriate “与目的、条件等相称的，适合的，恰当的”。