the first question‘s correct form should be :他没办法每天吃苦。 (mean:他不能够忍受每天都过得很艰辛)
for the second &fourth &sixth question,I think it's correct, cus I can understand what you mean.
but the third &fifth &seventh & eighth question I don't know what you want to say/(ㄒoㄒ)
I'm Chinese girl. I'm in English department at college.I can teach you Chinese(Mandarin & Cantonese)if you want :)
We can also learn from each other. :)
I'm looking forward to your message! :)