🔍 He often does this! 他经常干这种事！

新概念英语第二册 Lesson 18 · 语法精读与固定搭配分类

NCE Book 2 · Lesson 18（课本印刷页 80-83）· 3 个生词和短语 · 课文 8 句

一全文逐句语法解读

本课是「酒店老板的狗叼走提包」的趣事。语言点集中在 过去完成时 had had / had left / had taken（用来说清几个过去动作的先后）、as 引导的时间状语从句、give sth. back to sb. 这类动词短语，以及直接引语在句中不同的位置。

句子	语法点
After I had had lunch at a village pub, I looked for my bag.	过去完成时 had had 是 have 的过去完成式（吃过午饭）· look for 寻找（动作）
I had left it on a chair beside the door and now it wasn't there!	had left 先于 looked for · beside 表示「在……旁边」，与 besides（此外）不同

句子	语法点
As I was looking for it, the landlord came in.	as 引导时间状语从句，强调「当我正……的时候」· 从句用过去进行时，主句用一般过去时
'Did you have a good meal?' he asked.	直接引语在前、引述部分在后：引语末尾用逗号，主语与动词不倒装
'Yes, thank you,' I answered, 'but I can't pay the bill. I haven't got my bag.'	引语被插入语分成两半：引语 + 主语 + 动词 + 引语 · pay the bill 付账

句子	语法点
The landlord smiled and immediately went out.	immediately 放在实义动词之前，意为「马上」
In a few minutes he returned with my bag and gave it back to me.	in a few minutes ＝几分钟之后 · give sth. back to sb. 把某物还给某人，代词放中间
'My dog had taken it into the garden. He often does this!'	had taken 发生在 returned 之前 · He often does this 用一般现在时表示习惯

过去完成时

had + 过去分词：先发生的动作（had had / had left / had taken）

as 引导时间从句

as + 过去进行时：当我正……的时候

直接引语位置

引语可前置、后置，或被插入语分开

习惯与过去

He often does this!（现在习惯）／had taken（过去的过去）

had had 并不奇怪：第一个 had 是助动词，第二个 had 是 have 的过去分词，合起来表示「（在另一个过去动作之前）已经吃过」。
look for ≠ find：look for 是「找」的动作，find 是「找到」的结果；课文用 looked for，因为最后是老板把包还回来的。
give sth. back to sb. 中宾语是代词时只能放中间：gave it back（✓）／gave back it（✗）。