什么情况下在否定,疑问句可以出现some或someting等词?is everybody here?no,lin isn't here.这属于哪种？难道anybody不对？

在说话人期待得到一个肯定答复时可以
如Can you lend me some money?

希望别人得到肯定的回答的时候.
例如;Would you like some tea?
就是希望对方喝一些茶.

some或something一般用于肯定句。但表示建议或希望得到肯定回答时，在疑问句中也可使用some，一般在否定句和疑问中用any, anything。
some , something如果在提问时期待对方的肯定回答或鼓励别人说Yes时，疑问句中的不定代词用some，不用any；另外，any在强调“任何一个”时用于肯定句，在条件状语从句中用any。如：
Could I borrow some of the books, please? 请问我能从这些书中借一些书吗？
Would you like some tea?
He is taller than any of the students in his class.
Please lend me some books if you have any.
以及固定搭配do some shopping之类.
Do you wanna do some shopping?

征求别人意见的时候 如:Would you like some coffee?

在否定句,疑问句中,some和something要改成any和anything.
这句话应该表示希望得到肯定回答吧.