in spoken Chinese how to distinguish ma 吗 and 嘛？ haha

写的不错，不过，我这里有几个小建议，供你参考：

2.To expect or request

你举的例子都挺“娘“的，一般只有女人这样说话，有点发嗲的感觉。

男人一般只有开玩笑的时候才会这样说话的。

比如：“哎呀，不要这样对我嘛“ 。。。娘死了！写了我都鸡皮疙瘩了

3.嘛 as a topic maker

这里的翻译都不太好，我帮你调整一下：

a. 他嘛，一直都是那样的

Him? He's always been like that.

b. 干活嘛，哪有不累的？

Manual labour? Is there such a thing as non-tiring manual labour? 或

Manual labour? Is there such a thing as easy manual labour?

c. 我说嘛，怎么可能

如果说过：

What did I say? It's not possible 或

I told you so, it's not possible.

如果没说过：

In my opinion, it's not possible 或

If you ask me, it's not possible

Actually 干嘛 is the wrong word. The right one is 干吗. Lots of Chinese people choose to write 干嘛 instead of 干嘛, though.