debate vt. 討論，爭論 n. 爭論，辯論
[特徵]
- he debated with his father about the question.
他和父親就這個問題展開了辯論。
- after much debate he was chosen monitor of the class.
經過廣泛的討論，他被選為班長。
[備考必背] 重要詞組
be under debate 在討論中
- the new rules are under debate.
新規則正在討論中。
declare vt. 宣布；斷言
[特徵]
declare是一個正式用語，意思是“正式告知或通過官方使……為人所知”，即“宣布”；還指強調性地或權威式地“宣稱，斷言”。總之，declare含有經過考慮或通過一定程式後正式讓別人知曉的意思。
- the prime minister declared his intention in his speech.
首相在講話中聲明了他的意圖。
- he declared at the meeting that he supported me.
他在會上聲明他支持我。
[備考必背]
①declare作“宣布”講，含有“莊嚴”的意味，所以常接that從句作賓語。
- the arab people declared that they would fight to the finish.
阿拉伯人民宣布，他們要戰鬥到底。
② declare不能接不定式短語作賓語。
deep adj. 深的；深厚的；來自深處的 adv. 深深地
[特徵]
- the river is six feet deep.
河水深6英尺。
- the boy read deep into the night.
這男孩讀書一直到深夜。
[貼心叮嚀]
deep既可以作形容詞，也可作副詞。它和deeply的辨析很重要。
[備考必背]
①deep既可以作表語，也可以作定語，如：
a deep sleep 沉睡 a deep voice 低沉的聲音
②辨析副詞deep和deeply
deep用於具體的深度，包括空間和時間，它不能修飾形容詞和分詞；deeply用於抽象、比喻意義，與表達情感的動詞、形容詞或過去分詞連用時，常用deeply。
[練習與解答]
- he is interested in english. he often works at it until into the night.
a. deep; deeply b. deep; deep c. deeply; deep d. deeply; deeply
答案：c
（他對英語非常感興趣。他經常學習英語到深夜。如果你仔細閱讀了上面關於deep和deeply的辨析就很清楚為什麼選c了。）
defeat vt. 擊敗，戰勝；使破滅
[特徵]
defeat是及物動詞，可以直接跟賓語：defeat sb.（擊敗某人）。
- they defeated us in the game.
他們在比賽中贏了我們。
- the old granny's hopes were defeated.
老奶奶的希望破滅了。
[貼心叮嚀]
英文中有幾個單詞都有“戰勝，擊敗”的意思，但含義不同，要注意defeat，beat和conguer的區別。
[備考必背] 辨析defeat，beat和conguer
defeat的含義是“打敗”，但被打敗者不一定服輸；beat則表示徹底“打敗”，而且被打敗者完全服輸了；conguer更強調“把對方征服”，而且被征服者或被征服者的國家為征服者所有，可以任意支配。
- the public bet a lot of money on tom, but he was defeated.
人們為湯姆下了一大筆賭注，但是他被擊敗了。
- it was not until his third match that he finally beat humphries.
直到他的第三次比賽，他才最終打敗漢弗萊斯。
- some countries may be defeated but can never be conguered.
有些國家可能被打敗，但決不會被征服。