Unit 1 Making a difference
6. decide who will represent each branch, then prepare your role card and let the debate begin! 確定每個學科由誰代表，然后準備角色卡片，開始辯論! (p.2 speaking 第3行)
1) branch 此處意為“(學科)分科、分支”。如: ① english is a branch of the germanic family of languages. 英語是日耳曼語系的一個分支。② mathematics is a branch of science. 數學是一門科學。教育博客
【拓展】branch 也可意為“樹枝；分支機構；分會；支流；支線”等。如: ① he climbed up the tree and hid among the branches. 他爬上樹去，藏在樹枝里。② they set up fifty branches throughout the country. 他們在全國各地建立了50個分店(或分會)。③ the river has a lot of branches. 這條河有許多支流。教育博客
【提示】branch 也可用作定語: branch stores 分店; branch office 分局; branch railway 鐵路支線教育博客
2) debate作動詞用，意為“辯論，爭論，參加辯論”，既可用作及物動詞，也可用作不及物動詞。如: ① the question of whether war can be abolished has often been debated. 戰爭能否廢除是人們常常爭論的一個問題。② they were debating about a foolish question. 他們在爭論一個愚蠢的問題。教育博客
【注意】debate可用于debate about sth. with sb. 的結構。教育博客
【拓展】debate 也可用作名詞。教育博客如: ① after much debate harry was chosen captain of the football team. 經過許多辯論以后，教育博客哈利被選為足球隊長。② after a long debate the bill was passed by the house of commons. 經過長時間的辯論以后，該議案在下議院通過。
【辨析】debate；argue；discuss；quarrel教育博客
(1) debate to argue about sth.usually in an effort to persuade other people 辯論的目的在于說服對方。
(2) argue to present reasons for or against sth.，especially clearly and in proper order條理清楚地提出贊成或反對某事的理由。
(3) discuss to talk about (sth. with sb.) from several points at view 從不同的觀點出發，討論某事。教育博客
(4) quarrel have a strong argument 爭吵
7. there's no doubt that... 毫無疑問…… (p.2 useful expression) 教育博客
該句是固定句式，當doubt前有否定詞時，其后用that引導同位語從句；當doubt前無否定詞時，即主句為肯定句時，后面用whether引起從句。如: ① there was no doubt that he had been misunderstood. 毫無疑問他被誤解了。② there is little doubt that he will succeed. 他肯定能成功。③ there is some doubt whether he is guilty. 他是否有罪，人們還有些懷疑。
【注意】sb. has no / little / some doubt 后接從句時，用法同上。
【提示】there's no doubt后接名詞時，需用介詞about或of。如: there's no doubt about / of his honesty. 毫無疑問他是誠實的。
【鏈接】doubt作動詞用時，肯定句中可用whether，if，that引起賓語從句，否定句中只能用that。如: ① he doubted whether they would be able to help. 他拿不準他們是否能幫上忙。② i doubt if he's honest. 我懷疑他是否誠實。③ i doubt (that) he will come to the party. 我認為他未必會來參加聚會。④ he never doubted that they would win the game. 他從來不懷疑他們將贏得那場比賽。教育博客