說(shuō)明文是就某一件事說(shuō)明清楚，一般總是以空間順序展開(kāi)的，可以自上而下，自左而右，從里到外，從整體到局部等等。寫(xiě)物的文章常用“某處有某物”的句子表示物的存在。

常用的句型如：

There be...

I have got a/ an...

It is red/ green/ colour/ round...

I like... best.

It looks like...

I like it very much.

I will keep it forever.

題目：請(qǐng)以“Our Language Lab”為題，寫(xiě)一篇不少于60個(gè)單詞的作文。

Our Language Lab
我們的語(yǔ)音室

There is a language lab in our school. It's on the third floor. It's big and clean.
我們學(xué)校有一個(gè)語(yǔ)音室，它位于三樓，大而整潔。

There are 50 desks and 50 chairs in it. There are 50 computers and a control desk in it. There are 50 headphones on the desk.
語(yǔ)音室里有50張桌椅，50臺(tái)電腦和一個(gè)操縱臺(tái)，桌子上還放著50副耳機(jī)。

Every week we have our English lessons here. We watch slides, TV, video and listen to tapes. Then the teacher asks us questions. We like our language lab and always keep it clean and tidy.
我們每周都會(huì)在這兒上英語(yǔ)課，我們?cè)谶@里看幻燈片，電視，視頻和聽(tīng)磁帶。然后老師會(huì)向我們提問(wèn)。我們很喜歡這個(gè)語(yǔ)音室，并且總是保持它的干凈整潔。

點(diǎn)評(píng)：這篇文章寫(xiě)了"我們的語(yǔ)音室",按照一定的空間順序，先寫(xiě)設(shè)備，再寫(xiě)功能，讓人對(duì)語(yǔ)音室的概貌有一個(gè)全面，準(zhǔn)確的了解。