It's that the English grammar is really quite easy.

英语语法真的很简单。

youdao

As with activating vocabulary, you'll help your brain bring up what it knows about the past simple in an easy way before you begin to focus on studying English grammar in detail.

加上已经激活的词汇，在你开始学习语法细节之前，就可以帮助你的大脑用一种轻松的方法了解过去时。

youdao

The interesting grammar and short paragraphs make this a quick and easy book for English as a Second Language (ESL) learners.

它语法有趣，段落短小，对把英语作为第二语言的学习者来说简单易读。

youdao