be busy doing sth.忙于做某事，用英語造句

He is busy doing his homework

be busy in doing sth造句？

We are busy (in) preparing for the examination.  

我們正忙著準備考試。（《英語慣用法大詞典》）

be busy to do sth.和be busy doing的區別

1、意思上的區別

be busy doing：忙于做（某事 ）。

不是be busy to do sth，而是be too busy to do sth：太忙以至于不能做某事。

2、用法上的區別

be busy doing后接的動詞用成v.ing的形式。

be too busy to do sth包含too...to...的句型，表示太怎么樣以至于。

3、語意上的區別

be busy doing：表示正在做某事的一個狀態

be too busy to do sth：表示一個目標

其他相關例句

①、be busy doing

The plan for the new book is on ice at the moment.I've been busy with too many other things.

寫那本新書的計劃暫時擱一下,我一直忙于太多其它的事情.

He is busy doing his homework.

他正忙著做家庭作業.

②、be too busy to do sth

I'll be too busy to 買粉絲e to the meeting.

我太忙了不能到會。

ndemittedly, most of the time you will be too busy doing things to be aware of justhow potent a period March and the months to 買粉絲e truly are for you. 

事實上，你忙于各種事物而沒有意識到三月對你來說多么有利，以及接下來的幾個月為你準備的。

be busy doing sth

英語中的 be busy doing sth 是一個常用搭配，比如：

He is busy writing.

=He is busy (in) writing

他正忙于寫作。

I’m busy 買粉絲oking the dinner.

=I am busy (in) 買粉絲oking the dinner

我正忙著燒飯。

She was busy weeding the garden.

She was busy (in) weeding the garden.

她在花園里忙著除草。

He’s busy studying for his finals.

=He is busy (in) studying for rhis finals.

他正忙著準備期末考試。

以上都是后面省略介詞in，做方面狀語。be busy in doing sth=忙于做某事。in doing 修飾前面的謂語部分be busy。

be busy (in) doing sth是個系表結構。busy (in) doing sth是形容詞短語作表語，其中（in）doing sth修飾busy為形容詞的方面狀語。如果有介詞in，則doing為動名詞。省略介詞后有人認為doing是現在分詞，有人認為還是動名詞。現代語法不區分動名詞和現在分詞，二者都叫V-ing分詞，避免了動名詞和現在分詞之爭。

現代語法認為狀語是分句層次的成分，短語層次不叫狀語。因此現代語法將表語形容詞的后置修飾語稱為形容詞的補足語（買粉絲plement to adjective)。傳統語法認為in doing或doing分別為介詞短語或現在分詞作形容詞的方面狀語。