2019年高考英語知識點選修八Module 4單元總復習教案
⑥let sb.down 使某人失望
(回歸課本p53) with friends like these，who needs enemies？means a friend has betrayed your trust or let you down.
“with friends like these，who needs enemies？”意思是“你的朋友辜負了你的信任或者讓你失望。”
【歸納總結】
【例句探源】
①let down the rope so that i can climb up.
把繩子放下來我好爬上去。
②i’m counting on you to support me—don’t let me dwon.
我指望你支持我呢——別讓我失望。
③(朗文p1180)these curtains let in too much light.
這些窗簾太透光。
④the man let off a bomb in the crowd，causing 12 people dead at least.
那個人在人群中引爆了炸彈，至少導致12個人死亡。
⑤i’ll never tell you another secret if you let this one out.
假如你把這個機密泄漏出去，有秘密的事我再也不告訴你了。
⑥i wouldn’t speak to him，let alone trust him and lend him some money.
我理都不愿理他，更談不上信任他，把錢借給他了。
【即境活用】
11.the news of the famous singer’s absence has really ________ his fans ________.
a.taken；out b.helped；out
c.given；off d.let；down
解析：選d。句意：那位著名歌星缺席的消息真讓他的歌迷失望。用let sb.down表示“使某人失望”。
12.i’m badly ________，for there is no one that can be relied on.
a.let down b.let on
c.let out d.let off
解析：選a。考查短語動詞辨析和句意理解。句意：我非常失望，因為這里沒有可以依靠的人。let down“使失望”；let on“泄露”；let out“使出去”；let off“原諒，不懲罰”，只有a項符合題意。
句型梳理
①【教材原句】 perhaps correctness doesn’t matter—as long as speakers can understand each other—it’s communication that counts.
(p44)
也許正確與否不要緊——只要說話的人互相明白就行——重要的是交流本身。
【句法分析】 (1)只要……引導條件狀語從句,從句中一般用現在時代替將來時。
①you may borrow the book as long as you keep it clean.
只要你不把書弄臟，就可以借給你。
②i don’t mind as long as it doesn’t rain.
只要不下雨就行了。
③as long as you drive carefully，you will be very safe.
如果你開車小心，你就會很安全。
(2)長達……：
④this line is four times as long as that one.
這條線是那條線的四倍長。
(3)on condition that 只要，條件是
as far as 遠至；就……的限度
as good as 和……一樣好；幾乎
as well as 和……一樣好；和，既……又……
⑤ron lent me the money on condition that i pay it back next month.羅恩把錢借給我，條件是下月歸還。