一全文逐句语法解读
本课围绕 修车，重点是 否定疑问句（Isn't that…? / Didn't you…?）表期待或惊讶，以及 yet 在完成时疑问句中的用法。
¶ 1 · 否定疑问句表期待、惊讶（句 11、13）
| 句子 | 语法点 |
|---|
| Isn't that your car? | 否定疑问 表“那不是……吗？”，期待肯定回答 |
| Didn't you have a crash? | 过去时否定疑问句，常含“你不是……了吗”的意味 |
| Have your mechanics finished yet? | yet 用于疑问句，表“已经” |
¶ 2 · 现在完成时与一般过去时（句 5、6、8、9）
| 句子 | 语法点 |
|---|
| When did you bring it to us? | 有 when 提问过去时间，用一般过去时 |
| I brought it here three days ago. | bring → brought；three days ago 是过去时间 |
| Have your mechanics finished yet? | 完成时强调对现在的影响（车修好没有） |
| No, they're still working on it. | still + 进行时，表“仍在做” |
¶ 3 · well 与 describe 类表达（句 12、16）
| 句子 | 语法点 |
|---|
| Well, it was my car. | well 用在句首表“哎”，含“过去是、现在不是了”之意，was 重读 |
| Let's go into the garage and have a look at it. | have a look at = 看一看 |
| they're trying to repair it, sir. | try to do = 努力做；repair = 修理 |
二固定搭配与重点词组
| 短语 | 用法与例句 |
|---|
| attendant n. 接待员 | 本课对话人身份称谓，未在课文中作为句子成分出现。 |
| bring (brought, brought) | 带来，送来。When did you bring it to us? |
| have a look at | 看一看。= look at，口语常用。 |
| a lamp-post | 路灯杆。I drove it into a lamp-post. |
| to tell you the truth | 说实话。作插入语使用。 |
| Isn't that…? / Didn't you…? | 否定疑问句，表期待或惊讶。 |
三语法核心总结
- 否定疑问句常用一般疑问句的否定形式表示期待、请求或希望得到肯定的答复。
- yet 用于疑问句和否定句，常与现在完成时连用。
- well 置于句首表“哎”，用来引出与前面不同的事实。
- 本课生词 7 个：attendant 为对话人身份称谓，已收入「固定搭配」表；其余 6 个全部嵌入课文句子，无遗漏。