英语语法基础知识要点

1. 主从复合句

- 概念：主从复合句由一个主句和一个或多个从句构成。主句是句子的主体，而从句作为句子的次要成分，不能独立成为完整的句子。从句通常由关联词引导，并与主句通过关联词连接。

- 例子：(The old couple loves their children deeply, and at the same time, they are strict with them.)

2. 英语必备语法知识

- ① “have”和“there be”均可用“有”字翻译，但“have”表示主观的“所有、拥有”，而“there be”表示客观的“存在，某处有某物”。

- ② “there be”的单复数变化与be的变化规则相同，取决于后面所接的主语。

- ③ “have”在第三人称单数时变为“has”。

- ④ “there be”的否定形式在be后加not，而“have”通常在宾语前加“no”表示“没有”。

3. 英语语法知识总结

- if和whether的区别：

- ① 在动词不定式前只能用whether。

- ② 在whether …… or not的固定搭配中使用。

- ③ 在介词后只能用whether。

- ④ 宾语从句放在句首表示强调时，只能用whether。

- ⑤ 用if可能导致歧义时，应使用whether。

4. 英语作文

- When I was 4 years old, my mother told me she was going to have a baby, and then I got a sister. At first, I disliked my sister because my mother seemed to care about her all the time, and I felt ignored. But now, my sister plays with me, and I'm no longer lonely. She helps me a lot, and I love my little sister.

5. 英语作文

- Look, this is a photo of my family. There are six people in it. The two people sitting in the middle with grey hair are my grandparents. My grandmother is three years older than my grandfather. They are both kind. The tallest one is my father, standing behind my grandpa. My mother stands next to my father. My lovely younger sister stands close to my grandpa. And the one close to my grandma is me. I have a happy family. We love each other.