thing可以加s嘛?

thing可以加s嘛? 为什么say和thing后面要加S? there's no such thing,such和thing之间为何不加冠词, all the thing 是指所有的事吗,THING不用加S吗 the best things in life are happy中的thing 加还是不加S,为什么? 只要遇到thing就必须加s吗,如果不,举些加s和不加s的例子 I regret to say it is not always easy to do the right thing.thing为什么不加s? Energy is what makes thing work.thing要不要加s?这是不是零冠词的用法? I have too much thing have to do.这句话的语法正确吗,thing要加s吗? “thing ”是不是要加“s”,总觉得好像错了Efforts are the most important thing to help youachieve success. because it's the only thing that lasts中last为什么加s how,s every thing fisher可以加s吗 fur可以加s吗 pyramid为什么可以加s? toothpick 可以加s吗 human可以加s么 动名词可以加S吗?