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as gone abroad. You can breathe freely again. (2)causing sharp disfort or distress。 extremely violent or intense。 very serious. 劇痛的,劇烈的,嚴(yán)重的,難熬的 如 : a severe attack of toothache. 要求苛嚴(yán)的教官已經(jīng)出國(guó) .你可以完全放心。 牙痛的劇烈發(fā)作。 這張地圖提供了一條說(shuō)明霍亂起因的很有價(jià)值的線索。 6. This gave him a valuable clue about the cause of the disease. valuable (1)adj. worth of a lot of money 值錢的,貴重的 如: The watch is valuable. 這表很值錢。 a valuable diamond. 貴重的鉆石。 (2) adj. having great usefulness or value 如 : valuable information (3)n. (常用復(fù)數(shù)形式 )sth that worth a lot of money. 如 : Cathy kept her valuables in a safe. 重大的消息 凱西把她的貴重物品藏在保險(xiǎn)箱里 . 7. It seemed that the water was to blame.看來(lái)霍亂的流行要?dú)w罪于飲水了。 be+動(dòng)詞不定式,可以表示該做或不該做的事情,相當(dāng)于 must, should, ought to 等。 如: No one is to leave this building without the permission of the police. 沒(méi)有警察的允許誰(shuí)也不準(zhǔn)離開(kāi)這棟樓。 You are not to drop litter in the park. 公園里不允許亂丟紙屑。 受到責(zé)備,主動(dòng)表被動(dòng) ,John Snow looked into the source of the water for these two streets. 其次,約翰 .斯諾調(diào)查了這兩條街的水源。 look into 往 … ...里面看; to investigate 檢查;了解。 如: We’ll look into this matter together. 我們將一起調(diào)查這個(gè)問(wèn)題。 開(kāi)放思維: look on 觀看,面向,旁觀,看待 look out 面朝,留神,照料 look over 從上面看,察看,檢查 look around 環(huán)顧,觀光,察看 look through 看穿,審核,瀏覽,溫習(xí) look up and down 仔細(xì)打量,到處尋找 look after 尋求,照顧,關(guān)心 link…to... 把 … 與 … 連接;聯(lián)系 如: Fingerprints linked the suspect to the crime. 指紋證實(shí)了嫌疑犯的犯罪事實(shí)。 be linked to 連接 如: The two towns are linked by a railway. 9. In another part of London, he found supporting evidence from two deaths that were linked to the Broad Street outbreak. 在倫敦的另一個(gè)地區(qū),他從兩個(gè)與寬街爆發(fā)的霍亂有關(guān)聯(lián)的死亡病例中又發(fā)現(xiàn)了有力證據(jù) this extra evidence John Snow was able to announce with certainty that polluted water carried the virus. announce v. to make known publicly 如: The captain announced that the plane was going to land. 有了這個(gè)證據(jù),約翰 .斯諾就能夠肯定的宣布,這種被污染的水?dāng)y帶病毒。 機(jī)長(zhǎng)宣布飛機(jī)就要著陸了 。 announce sth. (to sb.) announce that + 從句 It is / was announced that + 從句 據(jù)宣傳 the exercises on your book.