语法总结
频率副词
always、usually、often、sometimes、never 表示动作发生的频率。
例：He often reads. She never plays football.
频率副词的位置
通常放在实义动词前，be 动词后。
例：Peter always plays basketball. He is usually busy.
星期前的介词
具体某天前用 on，周末前常用 at weekends。
例：on Tuesday; at weekends.
always、usually、often、sometimes、never 表示动作发生的频率。
例：He often reads. She never plays football.
通常放在实义动词前，be 动词后。
例：Peter always plays basketball. He is usually busy.
具体某天前用 on，周末前常用 at weekends。
例：on Tuesday; at weekends.