doing

形容詞物主代詞後面的介詞後接動名詞，即動詞的ing形式。

如:

It was my first time spending Spring Festival in China with my host family

It was my first time後不能接動詞不定式。

例如：

This is the first time I've seen a volcano. 這是我第一次看見火山。

1.ing有進行之意，所以正在發生的動作或狀態通常將動詞變為doing的非謂形式：

Missing you ages me.

I can't bear/stand his singing everyday in the morning.

Not knowing what to do makes me feel embarrassed

He can't help talking so loudly.

I face making the decision by myself.

2，已經發生的動作，相比to do，doing更為合適（至少在時間軸上更為接近）：

Losing his fortune drove him mad.

His running away proved that he was a coward.

Meeting you was fate, becoming your friend was a choice, but falling in love with you was beyond my control

hobby譯為“愛好，習慣”，後面接的內容應該表示經常性，習慣性的動作。所以後面接v-ing的形式。

例如：My hobby is collecting stamps.（我的愛好是集郵）

I have many hobbies, such as reading, skating, and watching TV. But reading is my favorite hobby.

interest、hobby、game、pastime

以上各詞均涉及閑暇活動。

1、interest

an activity or subject that you do or study for pleasure in your spare time 指業餘愛好（活動或科目）：

Her main interests are music and gardening.她的主要愛好是音樂和園藝。

2、hobby

an activity that you do for pleasure in your spare time 指業餘愛好（活動）：

His hobbies include swimming and cooking.他愛好游泳和烹飪。

His hobby is freefall parachuting.

他的業餘愛好是自由下落式跳傘。

My hobby is woodwork.

我的業餘愛好是做木工活兒。

3、game

a children's activity when they play with toys, pretend to be sb else, etc.; an activity that you do to have fun 指兒童遊戲、玩耍、娛樂：

a game of cops and robbers

警察抓強盜的遊戲

He was playing games with the dog.

他在逗狗玩。

4、pastime

an activity that people do for pleasure in their spare time 指消遣、休閒活動：

Eating out is the national pastime in France.

在法國，下館子是全華人普遍的消遣活動。

Her favourite pastime is surfing the net.

她最喜愛的消遣形式是上網。

Knitting can be a very enjoyable pastime.

編織可以是一種令人非常愉快的愛好