一全文逐句语法解读
本课继续 看病话题,重点是否定的 mustn't(禁止)与肯定的 must(必须)相对照,以及形容词比较级 better。
¶ 1 · must 与 mustn't(句 6-8、12)
| 句子 | 语法点 |
| …but you mustn't get up yet. | 禁止 mustn't = must not,表「不许、不能」 |
| The boy mustn't go to school yet… | mustn't + 动词原形;yet 用于否定句,表「还(没有)」 |
| And he mustn't eat rich food. | rich food = 油腻的食物 |
| He must remain in bed for another two days. | must 表必须;remain 表保持某种状态 |
¶ 2 · 比较级 better(句 2、6)
| 句子 | 语法点 |
| Better, thank you, doctor. | 比较级 well 的比较级是 better(不规则),此处是省略句 |
| You are better now… | 与前段时间相比「好一些了」;比较级用于两者比较 |
¶ 3 · 医嘱措辞(句 4、13)
| 句子 | 语法点 |
| Certainly, doctor. | certainly 表有礼貌的同意,比 Yes 更客气 |
| He can get up for about two hours each day… | can 表允许;for about two hours 每天大约两小时 |
| …but you must keep the room warm. | keep + 宾语 + 形容词 = 使……保持…… |
二固定搭配与重点词组
| 短语 | 用法与例句 |
| get up | 起床。He can get up for about two hours each day. |
| stay in bed / remain in bed | 卧床 / 继续卧床。 |
| for another two days | 再(多)两天。another + 数词 + 名词复数。 |
| rich food | 油腻的食物。 |
| keep the room warm | 使房间保持温暖。keep + 宾语 + 形容词。 |
| mustn't … yet | 还不能……。yet 用在否定句末尾。 |
三语法核心总结
- mustn't ≠ needn't:mustn't 是「不许」,needn't 是「不必」。
- yet 用于否定句和疑问句,表「还」;肯定句里用 already。
- keep + 宾语 + 形容词:keep the room warm 让房间保持温暖。
- 本课生词 7 个全部嵌入课文句子,无遗漏。