Listen to the following word groups.

请听下面的词。

Commas are optional after introductory word groups that are not four words or more.

少于四个单词的介绍性词组后的逗号是可选的。

To avoid confusion, use commas to separate words and word groups with a series of three or more.

为了避免混淆，使用逗号分隔单词和单词群体一系列的三个或更多。

For double-character word groups, opposite corners (sides) are scanned of the individual character.

双字词组则扫瞄单字的对角（边）。

Annie: For the first time, just read quickly to get the main ideas. Don't read word by word, read word groups.

安妮：第一次时，只要快速阅读获取中心思想。不要逐字阅读，要读词组。