(資料圖)

樂觀的英文：
optimistic
hopeful
be positive

參考例句：
groundless optimism.
毫無根據(jù)的樂觀A sanguine disposition
樂觀[快活]的天性The best physicians are Dr. Diet, Dr. Quiet and Dr. Optimistic.
節(jié)食、恬靜、樂觀是最好的醫(yī)生。Look on the sunny side of everything
對每件事都抱樂觀態(tài)度I"m sanguine of success.
我對成功抱樂觀態(tài)度。All year she has fluctuated between optimism and despair.
全年當(dāng)中她時而樂觀，時而消沉。"a cheerful person, to all appearances."
就表面跡象而論,是一個樂觀的人He has a sanguine attitude to life.
他對於人生有樂觀的看法。I then made some groundless remarks, assessing the situation over-optimistically
然后，我毫無依據(jù)地對形勢作出了過于樂觀的分析。I really admire her indomitable optimism and can-do spirit.
我實在佩服她不屈不撓的樂觀態(tài)度和苦干的精神。

optimistic是什么意思：
adj. 樂觀的，樂觀主義的
You have to be an optimist to be an inventor or entrepreneur.
要成為一位發(fā)明家或企業(yè)家，你必須得是個樂天派。 The timetable was hopelessly optimistic.
時間表制定得過于樂觀。An optimist sees the rose; a pessimist the thorn
〞樂觀的人看到玫瑰,悲觀的人只看到它的刺〞

hopeful是什么意思：
adj. 有希望的；有前途的
n. 有成功希望的人
Hope is the root of hopeful.
hope是hopeful的詞根。 This is a hopeful sign.
這是一個樂觀的信號。We are hoping against hope for a change in her condition.
我們希望她的病情有一絲轉(zhuǎn)機(jī)。

positive是什么意思：
n. 正數(shù)；正面；陽極；實在的事物
adj. 確定的；積極的；完全的；原級的；正的；陽性的
Moon is a positive.
月球是個實在的事物。It is the positive of the battery.
這是電池的陽極accessible position
可到達(dá)的位置