新概念第一册29-30 课文详解及练习答案
课文详注 Further notes on the text
1．untidy，乱，不整洁。 un-是前缀，表示“not”这类否定的意思。
2．air the room，给房间通通风。
这里的air作动词用。名词作动词用是英语构词法的一种。又如：dust(n.)灰尘；(v.)掸掉灰尘。
语法 Grammar in use
must(1)
must是一个情态助动词，表示“必须”、“应当”，与have to相似，表示不可逃避的义务。在说话人看来，没有选择余地。但是，must带有个人色彩，表示说话人的主观意图。表示个人感情时通常用must。You must…（你必须……）表示说话人说/认为……是必要的。如：
You must sweep the floor. 你必须扫地。（我说这有必要）
词汇学习 Word study
1．air
（1）n.空气，新鲜空气：
Let‘s go out and breathe some fresh air. 咱们出去呼吸点新鲜空气吧。
（2）n.空中，空间：
He likes to stay in the open air. 他喜欢在户外呆着。
（3）v.晾（衣服、被褥等）；使通风：
Open the windows and air the room. 打开窗户使房间通风。
Leave the trousers on the washing-line to air. 把裤子挂到晾衣绳上去晾干。
2．empty
（1）v. 使空；把…倒出（移出）：
Empty the bottle of milk. 倒光瓶里的牛奶。
They emptied the house. 他们把房屋搬空了。
（2）v. 流出；走出：
The river emptied itself into the sea. 河水流入大海。
It was raining, and the streets began to empty. 天下起了雨，街上的行人开始稀少了。
（3）adj. 空的：
There are some empty bottles in the refrigerator. 冰箱里有一些空瓶子。
Her purse is empty. 她的钱包是空的。
（4）adj. 空虚的，无意义的：
It‘s an empty dream. 这是个不现实的梦想。
Officials were flattered by empty complements. 官员们被空洞的恭维话弄得心里美滋滋的。
（5）adj. 呆板的，毫无表情的：
She looked at him with empty eyes. 她木然地看着他。
He said all this in an empty voice. 他用一种呆板的声调说了这一切。
练习答案 Key to written exercises
Lesson 30
A
1 Clean it!
2 Shut it!
3 Open it!
B
1 Shut the door!
2 Open the window!
3 Put on your shirt!
4 Take off your shoes!
5 Turn on the stereo!
6 Turn off the tap!
7 Sweep the floor!
8 Clean the blackboard!
9 Dust the cupboard!
10 Empty the cup!
11 Read this magazine!
12 Sharpen these knives!
新概念第一册31-32 课文详解及练习答案
词汇学习 Word study
1．climb v.
（1）攀登，攀爬：
The children are always climbing trees. 孩子们总是在爬树。
He likes climbing mountains. 他喜欢爬山。
（2）逐步上升（增长）：
The temperature is climbing steadily. 温度正在慢慢地平稳上升。
The price of gold climbed back. 金价逐渐回升了。
（3）（在社会地位等方面）往上爬：
He is trying hard to climb to the top of the social ladder. 他正努力爬到社会的最顶层。
He has climbed to a very high position in his field. 他已在自己的领域中爬到了一个很高的位置。
2．run v.
（1）跑，奔跑：
He is running quickly. 他正飞快地跑着。
He runs a mile every morning to keep fit. 他天天早晨跑一英里步以保持身体健康。
（2）流动；流出：
The current is running strong. 水流湍急。
Her eyes ran with tears. 她落泪了。
（3）追赶；追逐：
The dog is running after a cat. 那只豿正在追赶一只猫。
Many young men are running after that girl. 许多年轻人在追求那个姑娘。
语法 Grammar in use
现在进行时（1）
（1）在英文中若想表达此刻正在进行的动作或事件，要用动词的现在进行时形式。现在进行时由be的现在时形式（am, is, are） 现在分词组成。如课文中的Shes sitting under the tree 和Hes climbing the tree等句子均为现在进行时。对大多数动词来说，在动词后面直接加-ing即可构成现在分词，如doing, climbing。以-e结尾的动词，要去掉-e，再加-ing，如making。假如动词只有一个元音字母而其后跟了一个辅音字母时，则需将与辅音字母双写，再加-ing，如running, sitting。
（2）疑问式：将用了现在进行时的句子变成一般疑问句时只需将助动词提前。如：
Hes reading a magazine. Is he reading a magazine? 他正在看一本杂志吗？
（3）否定式：现在进行时的否定式是将否定词not放在助动词之后。如：
The dog is drinking its milk. The dog is not drinking its milk. 豿没在喝它的那份牛奶。
练习答案 Key to written exercises
Lesson 32
A
1 He is opening the window.
2 She is sharpening this pencil.
3 She is dusting the cupboard.
4 She is emptying the basket.
5 He is looking at the picture.
B
1 What is Mr. Richards doing?
Is he cleaning his teeth?
No, he isnt cleaning his teeth.
Hes opening the window.
2 What is my mother doing?
Is she shutting the door?
No, she isnt shutting the door.
Shes making the bed.
3 What is the dog doing?
Is it drinking its milk?
No, it isnt drinking its milk.
Its eating a bone.
4 What is my sister doing?
Is she reading a magazine?
No, she isnt reading a magazine.
Shes looking at a picture.
5 What is Emma doing?
Is she dusting the dressing table?
No, she isnt dusting the dressing table.
Shes cooking a meal.
6 What is Amy doing?
Is she making the bed?
No, she isnt making the bed.
Shes sweeping the floor.
7 What is Tim doing?
Is he reading a magazine?
No, he isnt reading a magazine.
Hes sharpening a pencil.
8 What is the girl doing?
Is she turning on the light?
No, she isnt turning on the light.
Shes turning off the tap.
9 What is the boy doing?
Is he cleaning his teeth?
No, he isnt cleaning his teeth.
Hes putting on his shirt.
10 What is Miss Jones doing?
Is she putting on her coat?
No, she isnt putting on her coat.
Shes taking off her coat.