高二英語Satellites教案
媽媽警告比爾在她外出時不要惹麻煩。
l.55
1.today there are more than 100 nations in this group and dozens of satellites have been put into space .
今天這個集團已擁有200多個成員國,數十枚衛星已經被送入太空。
句中的dozen為名詞,意為“一打”(相當于a set of twelve),常用作單復同形,尤其在基數詞后。例如:
i bought two dozen pencils . 我買了兩打鉛筆。
i’d like to buy a dozen eggs . 我想買一打雞蛋。
注意:在這二個句子中,dozen不加s,后面也不用of。但如果dozen后面有these , those , them , us等詞時,dozen之后就要用of。例如:
two dozen of them have passed the exam 他們中的二十四個人考試及格了。
另外,dozen表示不確切的多數時,其后加s,并用of,構成了詞組dozens of…
這時表示的是一個較模糊的數的概念。例如:
every morning several dozens of people gather in the park to do morning exercise .
每天清晨好幾十人聚集在公園進行晨煉。
i’ve been to the great wall dozens of times . 我去過長城許多次了。
2.they can tell the difference between healthy plants and plants that are diseased .
它們(攝像機)還可以識別健康植物和患病植物之間的差異。
a)動詞tell在本句中的意思是“區分”,“分清”。例如:
i can’t tell the difference between margarine and butter .
我嘗不出人造黃油和黃油有什么區別。
can you tell tom from his twin brother ?
你能分辨出湯姆和他的孿生兄弟嗎?
另外,“tell…from…”也是“說出”,“分清……和……的區別”的意思。例如:
colour-blind people can’t tell red from green .
患有色盲的人分不清紅色和綠色。
the twins are so much alike that it’s impossible to tell one from the other .
這對雙胞胎非常相像,幾乎不可能把他們分辨出來。
b)在這個句子中,that are diseased是定語從句,修飾先行詞plants。而這個定語從句中的diseased是形容詞,在從句中作表語,其意為“有病的”,“病態的”。例如:
the tree in front of the house is diseased and it must be cut down .
房前的這棵樹有病,必須將其砍掉。
she is not only diseased in body but also in mind . 她身心都有毛病。
3.the problem with looking into space from the earth is that there is a lot of dust in the earth’s air .
從地球上觀察太空存在一個問題,這就是地球的大氣中有著大量的塵埃。
a)句中的介詞短語looking into space from the earth在句中作定語,修飾名詞problem,介詞with在句中的意思是“就……來說。”例如:
but with them the situation is quite different . 就他們來說,情況就大不一樣了。
the chief difficulty with these men was that they were old .
這些人的主要困難是年紀太大了。
b)look into這一短語動詞是“觀察”,“窺視”的意思。例如:
he looked into the room , but saw nothing .
他們朝房間里看了看,但是什么也沒看見。