1．A spaceship from another planet? A satellite? A weather balloon? Can’t tell? That’s why it is called a UFO!从外星来的飞船吗?一颗卫星吗?一个气象气球?说不准?这就是被称为不明飞行物的原因!
(tell常与情态动词can，could或be able to连用，有“判断”，“区别”和“猜测”的意思。
How were you able to tell which button to press?你怎么判断出按哪个钮的?
1一can’t tell Kelly and Connie．一’我分不清凯利和康妮o
工can’t tell Kelly from Connie． ．
工can’t tell Kelly and Connie apart。
：I can’t tell the difference between Kelly and Connie．
2．The Loch Ness Monster in Scotland…could be a sunken shi p!苏格兰海湾怪物有可能是条沉船!
could推测，可能.例如：
I saw Li Jia just now in the library．She couldn’t have gone abroad．
(2)sink是不规则动词，它的过去式是sank，过去分词是sunk或sunkeno
①vt．使．．沉没；使陷入。例如：
They would rather sink the ship than surrender．他们宁可把船沉掉也不愿投降
He was sunk in deep thought。他陷入沉思。
②vi．下沉，下陷，下降。例如：
The ship sank to the bottom of the river.
（3）sinking 和 sinken 区别
They tried every means to rescue the sinking boat but failed.
They finally brought the sunken boat from the bottom of the river.
You might run into a Yeti in the Himalayas, or just see a few footprints, but you’d still be lucky .
你也许在喜马拉雅山会遇到雪人或但看到几个脚印，但你仍然是幸运的， ．L2”“”run into
①撞进，使撞人。例如：
汽车撞在墙上
②碰到，遇到，相当于come across，meet with例如：
hey ran into many difficulties in the project of rescuing the 0ld temple。
③(累计而)达到例如：
Thc money they spent on the bridge across the Changjiang River ran into one billion yuan. 4． Police in America have stepped up their search for a fifteen- year-old boy who went missing two ago in Dover, New Hamphire.
美国警方现已加紧对一名15岁失踪男孩的搜索，该男孩两天前在新罕布什尔州的多佛市失踪.
在集体名词police， audience cattle等前面一般都需要用定冠词the，但在本课中，由于是选自报纸，受篇幅限制，有时省略一些像冠词那样的虚词，意思不变。
注意：考试中一般不采取这种用法。
(2)step up speed up，increase走近；登上；加速．；逐步提高。例如：
I think it’s too difficult for the old man to step up so high a tower．
we decided to step up production to try to meet the increased demand．
(3) search
寻找；搜寻，搜查。例如：
The search for the missing boy has not been successful．对失踪男孩的搜寻还未成功。
He walked through the desert in Search 0f the lost Camel．他走过沙漠寻找丢失的骆。
S0 far they have been unlucky in their Search for go1d．到目前为止，他们在淘金过程中并不幸运。
②vt.寻找；搜寻，搜查。例如：
The villagers were searching for the missing child．
She searched every shop for a birthday present for her husband。
Go missing此处go 是一个连系动词，表示“变为”，“处于”\
常见的词组有：
①go wrong出问题，坏了o
②go mad／crazy发疯o：
③go ill(事态)恶化
④go hungry挨饿
⑤go tired累坏了十
⑥go grey(头发)变花
5.due to的用法 ．
①表示‘由于”相当于because 0f, caused by。例如：
The accident was due to careless driving．这次事故起于驶疏忽。
②表示“应付”，“应得到的”，“预期的”
我们的一切进步都归功于老师的帮助。
When is the rent due?何时应付房租?
When Justin did not show up“tbe family 1unch the next day，Mrs Foster became worried and told her husband to call the police.全家人在一起吃午饭时，贾斯廷仍然没有露面，福斯特夫人开始担心了，就让丈夫打电话报警。
show up 的用法
（1）露面，出现，到场，
We’ve been waiting for hours for you to show up．
②揭穿，揭露，相当于make the truth known，make someone feel embarrassed.
(1)rule out去掉；排除；取消；拒绝考虑。例如：
Pleas e rule out the misspeh word l
Lung cancer cannot be ruled out in this case．
Bad weather ruled the excursion out for that day．
8 (1)makeup的用法
①构成；占……比例，相当于form。例如：
Girls makc up 45％of the studcnt population in our school．女生占我们全校学生的百分之四十五。
This country is made”up of many small islands．这个国家是由许多小岛组成的。
②编写；捏造，相当于invent a story，a poem or an excuse。例如：
The teachetr asked the childen to make up poem about Christmas。老师让孩子们写一首圣诞诗。
③弥补，补偿，相当于replace something that has beenlost。例如：
Because of his illness，he had to make up the missed lessons．由于生病，他必须把落下的课补上。 ‘
We must make up for the lost time．我们一定要把失去的时间补回来。 ．
④和解，调停。相当于end a quarrel with someone and become friendly again。例如： ’
We haven’t been getting on well．Let’s make up．我们一直相处得不好。我们和好吧。
⑤化妆，．
Tom watched his sister make herself up for her date.
(2)charge的用法
①n．负责；责任。例如：
Who is in charge of your class?谁负责你们班?
Who takes charge of your class?
This class is in／under my charge．这个班由我负责。
This is in the charge of Mr Smith．这个工程由史密斯先生负责。
*注意：in charge of表示“负责…‘掌管”(主动)；in the charge of sb ／in (under)one's charge表示“由……负责”，“由……掌管”(被动)。
②n.收费；价钱。例如： 、
You can visit the museum free of charge．你可以免费参观那个博物馆。
Every year he travels once at his own charge．每年他自费旅游一次。
③“．要价；控告；使承担(责任、任务)
How much do you charge me for two nights in the hotel .
9.wonder ，可作动词，也可以作名词。
①vt。想知道，不知道。例如：
1 wonder if the school sports meeting is to be held next week． 0
②vi感到奇怪，惊奇，相当于feel surprised。例如： ]
I don’t wonder you were anxious about their safrty．你为他们的安全着急，我是不奇怪的。 ．
(3)惊奇[U] 奇迹 奇观[C]
He has fallen ill, and no wonder he can’t come.
④常用来比较客气地提出请求或征求对方许可。例如：
1 wonder if you would do me a favour．不知你能否帮帮我。