今日要點:

1. PixJS引擎介紹
2. 情態(tài)動詞之比較can,could和be able to

PixJS v4

• The HTML5 Creation Engine

Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.

• to create sth with sth:用...創(chuàng)建...

• digital content: 數(shù)字內(nèi)容

Fast

PixiJS' strength is speed. When it comes to 2D rendering, PixiJS is the fastest there is.

• strength: 優(yōu)點，長處

• when it comes to sth: 非常有用的一句句型，可以翻譯為: 一說到...，要說...

• the fastest: the+形容詞:表示一類人或物，例如the rich富人，the impossible 不可能做到的事.....

Flexible

Friendly, feature-rich API lets PixiJS take care of the fundamentals whilst you focus on producing incredible multiplatform experiences.

• friendly：友好地

• feature-rich: 形容特色比較豐富的，功能強大的

• to take care of: 照顧，體貼

• the fundamentals[?f?nd?'mentlz]: 基礎(chǔ)，基本原則

• whilst:連詞，與此同時

• to focus on doing sth:專注于做某事

Free

PixiJS is and always will be Open Source, with a large and supportive community pushing its growth and evolution.

• is and always will be: 現(xiàn)在以及未來都...

• with a large and supportive community: 擁有一個龐大的，互助的社區(qū)

• pushing its growth and evolution: 推動其成長與演變

PixJS網(wǎng)址

今日語法小知識:情態(tài)動詞之:比較can,could和be able to

1. can/could 表示能力；可能 (過去時用could),
   只用于現(xiàn)在式和過去式(could)。be able to可以用于各種時態(tài)。
   They will be able to tell you the news soon. 他很快就能告訴你消息了。

2. 只用be able to
   a. 位于助動詞后。
   b. 情態(tài)動詞后。
   c. 表示過去某時刻動作時。
   d. 用于句首表示條件。
   e. 表示成功地做了某事時，只能用was/were able to， 不能用could。
   He was able to flee Europe before the war broke out.
   = He managed to flee Europe before the war broke out.

could不表示時態(tài)時的用法:

3. 提出委婉的請求，（注意在回答中不可用could）。
   --- Could I have the television on?
   --- Yes, you can. / No, you can't.

4. 在否定，疑問句中表示推測或懷疑。
   He couldn't be a bad man.
   他不大可能是壞人。