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新概念第二册自学导读 Lessons6
当表示一类事物的性质、状态时,可以用下列方法表示:
A tiger is a dangerous animal.
老虎是一种危险的动物。
Tigers are dangerous.
老虎是危险的。
Salt is necessary for/ to us all.
我们大家都需要盐。
some用于表示不确定的某些人或东西,可数和不可数都可以:
He put some books on the desk.
他把一些书放在了桌上。
Some students are absent today.
今天有些学生缺席了。
I like to put some sugar in the soup.
我喜欢在汤里加些糖。
如果指某个确定的人或事物或者上文已提到过的人或事物,则要用定冠词the(有时相当于this/ that):
The man has just left.
那人刚走。
Do you still want the ticket?
你还想要这张票吗?
Yesterday I saw a beautiful skirt in a shop. But the skirt was too expensive.
昨天我在商店看见一条漂亮的裙子。但是那裙子太贵了。
在姓名、地名、国名(非复合词)以及月份、星期等前面不加任何冠词:
Tom is in Germany now. He studies physics in Berlin. He has a house in Bridge Street.
汤姆现在在德国。他在柏林学习物理学。在大桥街他有一所房子。
April is a pleasant month.
4月气候宜人。
He has classes on Monday.
他星期一有课。
冠词的用法比较复杂,需慢慢积累。
2.短语动词 (Phrasal verbs)
许多动词加上介词或副词后就会改变词义,因此需要记住整个短语,并根据上下文的意义判断动词在句子中的意思。常见的短语动词有: put on(穿上,戴上), take off(脱掉,摘掉), look for (寻找),look after(照顾,照料):
Don't put the cup on the table!
别把杯子放在桌上!
It is cold outside. Put on your coat.
今天外面冷。穿上外衣。
Someone has taken my pen.
有人把我的钢笔拿走了。
Take off your wet shoes, please.
请把你的湿鞋子脱掉。
She looked at the picture carefully.
她仔细地看着那幅画。
What are you looking for?
你在找什么?
She looked after the sick baby for three days.
她照顾了那个病孩子3天。
词汇学习 Word study
1.knock
(1)vi. 敲门:
Someone is knocking at the door.
有人在敲门。
I knocked, but no one answered.
我敲了敲门,但是没人答应。
(2)vt., vi. 碰撞:
You always knock things off the table. 你总是碰掉桌上的东西。
Jim was knocked over by a bus this morning.
今天上午吉姆被一辆公共汽车撞倒了。
She has knocked a cup over again.
她又碰倒了一个杯子。
(3)vt. 把(某人)打成……状态:
Bob is very strong. He knocked Tom out yesterday.
鲍勃很强壮,他昨天把汤姆打昏过去了。
(4)与off连用时有一些特殊的含义。一般用于口语。
A vt.(价格上)减去,除去,打折扣:
They knocked five dollars off the price of the coat.
他们把这件上衣的价格降低了5美元。