人教版必修2Unit1解析
孩子的英語作文老是跟不上水平?不要怕，今天小編爲大叫整理了人教版的必修2Unit1解析，大家可以看一看。
本單元話題——文物古蹟(Cultural relics )歷來是全世界較爲關注的焦點之一，尤其是在伊拉克戰爭中，大量代表古人類文明的文物、古蹟慘遭破壞，甚至毀滅!本單元學習的是以歷史文化遺產爲主題，涉及的面很廣，與歷史、地理等知識相融合，除了學習語言知識，更多地是引導學生對歷史文化遺產的熱愛以及倡導對它們的保護。
疑難追蹤
1. Does a cultural relic always have to be rare and valuable? (P1)
難句解讀
句意：文物總得是稀有和價值連城嗎?
rare
作形容詞，意爲“稀少的;罕有的;稀薄的”。
例如：
With rare exceptions, he does not appear in public now.除了極其個別的情況外，他現在不公開露面。
It is rare to find such an interesting group of people.很難找到這麼一羣有趣的人了。
I only saw Helen on the rare occasions when I went into her shop.當我到海倫的店裏時，很少時候能見到她。
valuable
作形容詞，意爲“有很大價值的，很有用，貴重的”。
例如：
Nothing is more valuable than time, but nothing is less valued.沒有比時間更貴重的東西，但也沒有比它更受輕視的東西。
You will find this little tool valuable for cutting out small shapes.你會發現這件小工具對雕琢小件物品十分有用。
難點深究
rare 的副詞形式爲rarely，意爲“不常;很少;難得”。它的名詞形式爲rarity ，意爲“稀罕;罕見”。rarely用於句首時，和seldom, never等一樣，後面的句子要用倒裝句式。例如：
Rarely have I seen such a beautiful sunset.我很少見到這樣美麗的日落。
2. Is it enough to have survived for a long time?(P1)
難句解讀
句意：存了很久就行嗎?
survive
作及物動詞，意爲“從……中逃生; 比……活得長”;作不及物動詞意爲“ 倖存”。
例如：
Only two passengers survived the aircrash.這次飛機失事中只有兩名乘客倖免於難。
She survived her husband by twenty years.她丈夫去世後她又活了二十年。
He survived his wife for many years.他比妻子多活好多年。
Few survived after the flood.洪水後極少有人生還。
The man was very ill, but he survived.這位男士病得很厲害，可是他活下來了。
valuable
作形容詞，意爲“有很大價值的，很有用，貴重的”。
例如：
Nothing is more valuable than time, but nothing is less valued.沒有比時間更貴重的東西，但也沒有比它更受輕視的東西。
You will find this little tool valuable for cutting out small shapes.你會發現這件小工具對雕琢小件物品十分有用。
難點深究
此句是一個it 用作形式主語的句子，動詞不定式to have survived for a long time是真正的主語。該句型結構是：It + be + adj. + 動詞不定式。
例如：
It is necessary to learn English well.有必要學好英語。
It is impossible to finish such hard work in such a short time.在這麼短的時間內完成這麼難的工作是不可能的。
其具體形式還有兩種：
(1)It + be + adj. + for sb.+ 動詞不定式
這類句型常用形容詞easy, difficult, hard, important, possible，wise等作表語，有時候爲了強調不定式動作的執行者，常在不定式前加for sb.。
例如：
Its necessary for the young to master two foreign language.年輕人有必要掌握兩門外語。
It is unwise to give the children whatever they want.孩子想要什麼就給什麼是不明智的。
(2)It + be + adj. + of sb. + 動詞不定式，這類形容詞常是表示心理品質,性格特徵的形容詞，如：kind, nice, stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和這些形容詞可以構成主系表結構。
例如：
Its very kind of you to help me with the work. =You are kind to help me.你幫助我工作真是太好了。
It seemed selfish of him not to share his dictionary with others. =He seemed selfish not to share his dictionary with others.他不給別人用字典似乎是自私的。
3. Frederick William 1, the King of Prussia, could never have imagined that his greatest gift to the Russian people would have such an amazing history.(P1)
難句解讀
句意：普魯士國王威廉一世絕不可能想到他送給俄羅斯人民的厚禮會有這樣一段令人驚訝的歷史
amaze
作動詞，意爲“ 使驚奇”，常用於 be amazed at/by (對……大爲驚奇)和to ones amazement (使某人大爲驚奇的是)的結構。amazed 作形容詞，意爲“ 感到驚奇的”; amazing 作形容詞，意爲“令人吃驚的”; an amazing achievement/discovery驚人的成就/發現amazement作名詞，意爲“驚奇”; amazingly作副詞，意爲“令人驚奇的是”。
例如：
I was amazed at his conduct.我對他的行爲感到驚訝。
He stood in amazement at the sight.他看到那種景象, 驚愕得呆呆地站在那裏。
難點深究
注意amaze, astonish, surprise的區別：都含有“使……驚異” 的意思,而且它們都是一般以事物或他人作主語，以本人作賓語; 以本人作主語時用被動形式。
amaze強調“使驚異，困惑”，其間還有“驚歎，佩服”的意思，是意義很強的詞;
astonish表示“使人大吃一驚”，“幾乎無法使人相信”，但沒有“驚歎”的意思;
surprise語氣較上述兩詞弱，只表示“出乎意外地驚異”。
例如:
We were amazed at the ingenuity with which they solved their difficulties.他們在解決困難中所表現的智慧使我們驚歎。
I was astonished at his rudeness.他的粗野使我大吃一驚。
We were surprised at finding the house empty.我們驚訝地發現房子是空的。
4. The amber which was selected had a beautiful yellow-brown color like honey.(P1)
難句解讀
句意：選出來的琥珀色彩豔麗，呈現蜂蜜一樣的黃褐色。
select
作及物動詞，意爲“選擇, 挑選”。
例如：
She lets her son select his own Christmas present.她讓兒子自己選擇聖誕禮物。
They were selected from many applicants.他們是從許多報名者當中選出來的。
難點深究
注意choose, select，pick和prefer的區別。都含“挑選”、“ 選擇”的意思。
choose 系常用詞, 指“一般的選擇”, 側重“憑個人意志或判斷進行選擇”;
select 強調“在廣泛的範圍內精選、淘汰”, 側重“以客觀爲標準進行選擇”;
pick 強調“從個人角度在衆多中進行挑選”, 有時含有“任意選擇”的意思;prefer指“偏愛”、“更喜歡”, 有時“只表示自己的看法, 不一定加以選擇”。
例如:
Leave it to you to choose between the two methods.任你在這兩種方法中作出抉擇。
They were selecting maize seeds.他們在選玉米種。
Students have to pick three courses from a list of 15.學生們必須從15門課中選修3門。
I prefer tea to coffee.比起咖啡來我更喜歡茶。
