形容詞 hopeless:

1. without hope because there seems to be no possibility of comfort or success
2. of a person unable to do something skillfully
3. certain to fail
4. (informal to emphasize how bad it is) beyond hope of management or reform

1. Leave me alone. I'm hopeless.
   別打擾我。我已經(jīng)徹底絕望了。
2. I'm hopeless at mathematics.
   我對(duì)數(shù)學(xué)一竅不通。
3. I'm hopeless.
   我不可救藥了。
4. It was completely hopeless. They had to await their doom.
   希望已絕，他們只能坐以待斃了。
5. It's hopeless.
   沒(méi)有希望了。
6. The doctor said the old man's condition was hopeless.
   醫(yī)生說(shuō)這位老人的病是沒(méi)有希望的了。
7. Her room is in a hopeless muddle.
   她的房間弄得不堪設(shè)想地混亂。
8. With a hopeless sigh, he turned away.
   他發(fā)出一聲絕望的嘆息，轉(zhuǎn)身走開(kāi)了。

hope.less

adj.（形容詞）
Having no hope; despairing.See Synonyms at despondent
不抱希望的；絕望的參見(jiàn) despondent
Offering no hope; bleak.
沒(méi)有希望的；慘淡的
Incurable.
不可救藥的
Having no possibility of solution; impossible.
沒(méi)有解決的可能性的，不可能的

【引伸】
hope.lessly
adv.（副詞）