雅思詞組1:flag down揮手使(車輛)停下

Yesterday I flagged down a cab to take me to the office-and had to direct the driver all the way.
昨晚我坐出租車去辦公室，一路上還得指引司機怎么開。

雅思詞組2:floppy disk軟盤

You'd better use a floppy disk to save your blueprint.
你最好用軟盤保存你的藍圖。

hard disk指“硬盤”。

雅思詞組3:focus on集中(注意力、精力等)于

I'11 start with a brief history of East End, and then focus on life in the first half of the twentieth century.
一開始我將簡要介紹一下倫敦東區的歷史，然后集中講20世紀上半葉倫敦東區的生活。

concentrate on

在稚思聽力中，focus on后面接的一般都是考點，其他類似信號詞有indicate等。

雅思詞組4:for instance例如

Now, there are several hypotheses about the origins of the first Neolithic settlers in Ireland, but most of these contain problems. For instance, there are considerable archaeological difficulties about the theory that they came from England. The evidence doesn't really add up.
現在，關于愛爾蘭的第一批新石器時代居住者的起源有幾個假設，但是大多數的假設都存在問題。例如，有一個理論認為這些早期居民來自英格蘭，但該理論存在許多考古方面的困難，證據完全不合情理。

雅思詞組5:for lease/rent出租

There's an apartment for lease. Let's go and have a look.
有公寓出租。我們去看看吧。

雅思詞組6:for one thing(用于列舉原因)一來，一則

There are great practical problems about the theory that the settlers came directly from continental Europe. For one thing, it's not clear just how sufficient numbers of men and women could have been transported to Ireland to establish a viable population.
居住者直接從歐洲大陸過來這一理論存在很多實際的問題。一來，不知道要運送多少男人和女人到愛爾蘭才足以建立起一個可存活種群。

on the one hand

雅思詞組7:for the sake of為了…;符合…的利益

I feel you've often used complex structures and Iong sentences for the sake of it
我感覺，你過于頻繁地使用復雜結構和長句子，為用而用。

in the interests of

雅思詞組8:freak out處于極度興奮中，行動反常

People often fume over the mistreatment of animals by merchants but and freak out, at an uptick in food prices.
人們經常對商人虐待動物的行為感到憤怒，又會對食品價格的小幅升高反應強烈。

雅思詞組9:freeze over(使)被冰覆蓋，封凍

The lake froze over in winter, so the children could go skating there.
冬天時湖面結冰了，孩子們可以去滑冰了。

雅思詞組10:frequency of buses公交車發車頻率

There are few people on this bus route so the frequency of buses on this route will be reduced.
這條公交線路的乘客很少，因此將降低此線路公交車的發車頻率。