新概念英语第一册 Lesson 57 · 语法精读与固定搭配分类
本课把 一般现在时（习惯）和 现在进行时（此刻）对照起来：usually / every day 配一般现在时，today / this morning / at the moment 配现在进行时，中间常用 but 转折。
| 句子 | 语法点 |
|---|---|
| The children go to school by car every day. | 习惯 every day 是一般现在时的标志词，用动词原形 |
| …but today they are going to school on foot. | 此刻 today 强调「今天」，用 be + doing；on foot = 步行 |
| Mrs. Sawyer usually stays at home in the morning. | usually 是频率副词，仍用一般现在时；注意第三人称单数 -s |
| But this morning she is going to the shops. | this morning 表今天早上 → 现在进行时；go to the shops 去商店买东西 |
| 句子 | 语法点 |
|---|---|
| It is eight o'clock. | 整点用 o'clock；问时间是 What time is it? |
| It is ten o'clock. / It is four o'clock. / It is six o'clock. / It is nine o'clock. | 课文用五个整点串联一天的场景，是叙事的时间骨架 |
| 句子 | 语法点 |
|---|---|
| …but this evening they are not doing their homework. | 现在进行时的否定：be + not + doing |
| At the moment, they are playing in the garden. | at the moment = 此刻，是现在进行时的典型标志 |
| But he's not reading his newspaper tonight. | tonight 指今晚 → 进行时；否定在 be 后加 not |
| At the moment, he's reading an interesting book. | an 用于元音音素开头的词；interesting 指「使人感兴趣的」 |
| 短语 | 用法与例句 |
|---|---|
| by car / on foot | 坐小汽车 / 步行。by + 交通工具，on foot 是固定说法。 |
| every day / today | 每天（一般现在时）/ 今天（现在进行时）。 |
| go to the shops | 去商店买东西。shops 用复数。 |
| in the morning / in the afternoon / in the evening / at night | 一天四个时段的固定搭配。 |
| at the moment | 此刻，眼下。At the moment, he's reading a book. |
| drink tea in the living room | 在起居室喝茶。living room = 客厅。 |