高二英語Satellites教案
a)句中的make…from…的意思是“用……制成……”。它?梢杂糜诓▌咏Y構,例如:
i made a table from this kind of material . (the table was made from this kind of material .)
我用這種材料做了一張桌子。
my mother made me a shirt from the material i didn’t like .
我媽媽用我不喜歡的面料給我做了一件襯衣。
b)equipment一詞是不可數名詞。如以下各句中:
a new factory with modern equipment will be built here .
在這里將要建一個具有現代化設備的工廠。
radar equipment helps us a lot in our daily life .
雷達裝置在日常生活中頗有用處。
c)using very broad sun panels結構是~ing短語形式,其作用是在句中用作方式狀語,修飾making electricity from sunshine。例如:
we chinese eat our food , using chopsticks , while the westerners eat their food , using forks and knives .
我們中國人用筷子吃東西,而西方人用刀子和叉子。
4.once the satellite goes into its orbit round the earth , the panels are unfolded in order to catch the sunshine .
一旦衛星進入地球轉產,帆板就打下來吸收陽光。
a)once在句中是連詞,引導一個時間狀語從句,相當于as soon as…,在這種從句中,也不用將來時態,而只用一般時或完成時。例如:
once i decide to do something , i’ll try my best to do it well .
一旦我決定做什么事,我一定會盡力去把它做好。
once we have gathered enough proof , we can accuse him at the court .
我們一旦得到足夠的證據,我們就可以在法庭上指控他。
a decision shouldn’t be changed once it is made .
一旦作出了決定,就不應當改變它。
另外,once還可以用作副詞,作“一次”,“曾經一度”;“過去”解。例如:
i go to see my grandparents once a week . 我每星期去看我的祖父母一次。
the song was once very popular . 這首歌曾經一度很流行。
b)動詞unfold (展開),它和fold (折疊)是一對反義詞。例如:
she opened the letter , unfolded it and than read it .
她拆開信封,把信折開然后讀了起來。
after reading the letter , she folded it and put it in the envelope again .
讀完信之后,她把信疊好,又放入信封。
在英語中,有不少動詞可以用加前綴un- , dis- 的方法,構成詞義相反的詞。如:
lock (上鎖) unlock (開鎖) like (喜歡) dislike (厭惡)
dress (穿衣服)undress (脫衣服) appear (出現)disappear (消失)
5.they remain above the same place on the earth and travel round it in a very high circle .
它們(衛星)保持在地面上周一位置的上方,在高空中環繞地球運行。
句中的circle一詞是作為名詞用的,它還可以用作動詞。名詞時其意為“圓”,“圈”,而作動詞時,則作“環繞”,“傳播”解。例如:
the children were standing in a circle , playing games .
孩子們站成一個圈,做游戲。