第一，迷你對話

A: What are you doing these day?

你這幾天，在做什么？

B: I'm brushing up my Japanese.

我在復習日語。

A: Reviewing your Japanese? What for?

復習日語，來干嘛？

B: I'm preparing for the entrance examination of post graduates.

我準備考研。

第二，地道表達

brush up

1. 解詞釋義

Brush up的意思是“復習”“溫習”。

2. 拓展范例

e.g. I shall have to brush up my mathematics before I take on that job.

我接那項工作以前得復習一下數學。

e.g. He needs to brush up on his English before he goes to the U.S.

他去美國之前必須先溫習他的英文。

e.g. Eleanor spent much of the summer brushing up on her driving.

埃莉諾這個夏天大部分時間都在練習駕駛技術。

第三，語匯積累

1. the entrance examination of : ......的入學考試

e.g. I heard you had passed the entrance examination of the university.

聽說通過了該大學的入學考試。

2. What for? 為什么？
e.g. Did John work hard at college ? What for ?

約翰在大學學習很用功嗎？他為了什么？

E.g. "What for?" echoed the girl.

那姑娘模仿他的話：“去干什么？”

3. prepare for：為......做準備

e.g. She decided to forgo the party and prepare for the English exam.

她決定不去參加聚會,為英語考試作好準備。

e.g. I've been out of circulation in order to prepare for the TOEFL.

為了準備托福考試,我已經不從事社交活動。