你为什么不出去散散步呢英语：Why not go our for a walk?
短语解析：
Why not．这里需要表达出为什么不，提出建议，用why not后加动词原形。
表示为什么不还可以用why don't you+动词原形，提出建议还可以用How/what about+doing sth？以及Let's do sth．
例如：
Let's make it a little earlier，OK？
我们早一点吧，好吗？
What about writing back to him about it？
要不就这事给他回一封信？
为什么不散步？英语中有3种表达不同语法：
1、why don't you take a walk?
2、why not take a wallk?
3、why don't you go for a walk?
情景对话：
A：What did you say? 你说什么？
B：I said it's a lovely day. Why don't we go for a walk?我说天气这么好，我们何不去散散步呢？
A：Well, I feel a little tired. 嗯，我有点累了。
B：Come on! A little labor, much health.嘿，来吧。生命在于运动。
A：Then can you wait a few minutes? I want to finish writing this letter.那你能等我几分钟吗？我想把这封信写完。
B：Don't take too long. It would be a shame not to take advantage of such lovely weather.别写太久。这么好的天气不好好利用，太可惜了。
A：I won't be long. No more than ten minutes. Why don't you go ahead and I'll meet you in the park?一会儿就写完。要不了十分钟。你何不先走一步，我待会到公园找你吧。
B：I Believe I will. Look for me near the lake. 我是得先走。你到湖边找我吧。