概要：14. in the dark在黑暗中It was hard to find your pen in the dark .15. be supposed to do应该干……We are supposed to gather at the school gate at 7:30 .16. a length of一段 She bought two lengths of silk .What is the length of the report ?17. send for派人去请；派人去取I’ll send for the magazine tomorrow .If bitten by a snake , you should send for help and don’t walk .18. fire back开火还击No one was allowed to fire back unless the order was given .二、学海导航【学法指要】单元难点疑点思路明晰1. I\'ve got some personal aff
高二英语第十五单元A famous detective（著名侦探）,标签：高二英语选修7教案,高二英语下册教案,http://www.67jx.com14. in the dark在黑暗中
It was hard to find your pen in the dark .
15. be supposed to do应该干……
We are supposed to gather at the school gate at 7:30 .
16. a length of一段
She bought two lengths of silk .
What is the length of the report ?
17. send for派人去请；派人去取
I’ll send for the magazine tomorrow .
If bitten by a snake , you should send for help and don’t walk .
18. fire back开火还击
No one was allowed to fire back unless the order was given .
二、学海导航
【学法指要】
单元难点疑点思路明晰
1. I\'ve got some personal affairs that I have to see to . 我有些私事非处理不可。
〖明晰〗1) affair, business 作“事物”讲时，这两个词的意义很相近，常可通用。
Mind your own affairs (business) . 少管闲事。
business不能用复数，而affair特别是指重大或头绪较多的事务时，常需要复数，在下面的句子里，这两个词不能通用。
Each Ministry of Foreign Affairs lodged a protest with the other . 双方外交部向对方外交部提出抗议。
Business before pleasure . 先办正事，再谈娱乐。
2)see to有“注意，照料，保证，修理，诊治”等意思。例如：
Your shoes need seeing to . 你的鞋得修补了。
You ought to have your eyes seen to by a doctor . 你应该请医生治眼睛。
2. I dare say my uncle will . I have no other relatives . 我认为我叔父会得到这笔钱，我没有其他的亲戚。
〖明晰〗1)I dare say 的意思并不是“I dare to say”，而是和“也许”几乎同义或者等于“我想”。
I dare say you\'re right . 我看大概是对的。
I dare say it will come later . 我想它以后会来的。
2)dare用作情态动词时，后接动词原形，主要用于疑问句和否定句或者表示不肯定意义的各种从句中。例如：
Dare you ask him ? 你敢问他吗？
I dare not go there . 我不敢去那儿。
That is as much as I dare spend . 我只敢花那么多的钱。
3)dare作主动词时是规则动词，用法如下：
a)表示“敢”，后接动词不定式，也可省去to。例如：
I don\'t know how he dares to appear in public .
I\'ve never dared go back to look . 我从来不敢回去看一下。
3. I think it will be necessary for me to pay you a visit and see where you live . 我想有必要去拜访你，看看你住在什么地方。
〖明晰〗1)句中的it用作形式主语。例如：
Is it necessary for us to meet/necessary that we meet ?我们有见面吗？
2)pay a visit (to someone or something)/pay (someone or something) a visit表示“（短时间）访问（某人，某物）”；“参观（某物）”。例如：
Shall we pay your brother a visit this afternoon ?
4. Do you see that hole high up in the wall, about 18 cm by 9 ? 你看到墙壁上方那个大约18厘米宽，9厘米高的洞没有？
〖明晰〗1)句中的high用作副词，指的是高矮；而highly表示很高的程度（意思往往是 very much）。
The plane flew high above . 飞机高高地在上空飞。
An eagle circled high overhead . 一只鹰在头上高高盘旋。
The goods on display are all very highly priced . 这些展销货物标价都很高。
He speaks very highly of the boy\'s behaviour . 他十分赞赏孩子的行为。
2)about 18 cm by 9用作后置定语，修饰that hole，介词by表示面积、 体积的长、宽、高。例如：
The room measures fifteen feet by twenty feet . 房间宽十五英尺，长二十英尽。
5. Dr Watson and I will spend the night locked in your room . 我和华生就锁在你的房间里过夜。
〖明晰〗1)第一人称单数I与其他人连称用时，通常的词序是，第二、三人称代词在前， 第一人称代词在后。例如：
You and I can do it . 我和你都能做这件事。
You, Tom and I are to leave tonight . 我、你和汤姆今晚得离开。
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