具體差別在短語中體現(xiàn)。go along是沿著走的意思，比如說順著某條路走；go down是沿著走下去的意思，有沿著什么走到頭的涵義，比如說沿著某條路走到頭。go down this street，you can see a post office.

Down副詞、形容詞、名詞、介詞、動(dòng)詞，作副詞時(shí)意為“ 向下；在下面；（坐、躺）下；下降；（數(shù)量、力量等）減少；由上至下；向（或在）南方；（寫）在紙上；（列）在表格上；（寫）在紙上；失去（錢數(shù)）；預(yù)付；已完成數(shù)量（或進(jìn)度）；到；往樓下；在較不重要之處；離開首都（或重要城市）；從縱向讀；由濃變淡；由多到少；由復(fù)雜到簡單。

短語精講

1. break down

My car broke down,so I needed to take a bus. （機(jī)器等）出故障，拋錨

Her health broke down under the pressure of work. （健康、精神）垮掉

He broke down when he heard the news. 失控痛哭

Talks between the two sides have broken down. （討論）失敗

The two countries met to break down barriers . 砸倒，破除（障礙）

Once buried, the fibers break down. 分解

2. cut down

Half of the forest was cut down to make room for the road. 砍倒

They have to cut down the office staff. 縮減，縮短

3. pull down

The old houses should be pulled down as soon as possible. 拆毀

4. put down

After he finished his exercise,he put down his pen. 放下

Put down your name, please. 寫下

Soldiers went in to put down a riot. 鎮(zhèn)壓

5. take down

Please take down the books from the shelf．取下

We think we took your number down incorrectly. 寫下

The machine gun isn't taken down easily. 拆卸，拆掉

6. turn down

Turn down the radio please. 調(diào)低（音量或熱度）

I thanked him for the offer but turned it down. 拒絕