过去完成进行时（Past Perfect Progressive）
Go to Practice Exercises过去完成进行时表明一个动作在过去某个时刻之前正在进行。它强调较早活动的持续期或连续性。
过去完成进行时由had been + 动词-ing形式构成。所有主语（I, you, he, she, it, we, they）都使用相同的形式。
构成
肯定句
用had been + 动词-ing构成过去完成进行时。缩写形式（'d）在口语英语中很常见。
| 完整形式 | 缩写形式 |
|---|---|
| I had been reading for an hour | I'd been reading for an hour |
| You had been walking in the park | You'd been walking in the park |
| He had been cooking dinner | He'd been cooking dinner |
| She had been talking on the phone | She'd been talking on the phone |
| It had been raining all morning | It'd been raining all morning |
| We had been playing football | We'd been playing football |
| They had been studying English for years | They'd been studying English for years |
否定句
在'had'后加'not'构成否定句。缩写形式'hadn't'很常见。
| 完整形式 | 缩写形式 |
|---|---|
| I had not been reading for long | I hadn't been reading for long |
| You had not been walking in the park | You hadn't been walking in the park |
| He had not been cooking dinner | He hadn't been cooking dinner |
| She had not been talking on the phone | She hadn't been talking on the phone |
| It had not been raining all morning | It hadn't been raining all morning |
| We had not been playing football | We hadn't been playing football |
| They had not been studying English for years | They hadn't been studying English for years |
是/否问句
将'had'放在主语前构成问句。
例句：
- Had I been reading before you arrived?
- Had you been walking in the park earlier?
- Had he been cooking when the guests arrived?
- Had she been talking on the phone for long?
- Had it been raining all morning?
- Had we been playing football before it started raining?
- Had they been studying English for years before moving?
疑问词问句
以疑问词开始，然后使用had + 主语 + been + 动词-ing。
例句：
- What had I been doing before you called?
- Where had you been walking?
- Why had he been cooking for so long?
- Who had she been talking to?
- How long had it been raining?
- What had we been playing before the rain?
- How long had they been studying English?
用法
注意：静态动词（如know、like、believe、want）通常不用于进行形式。它们描述的是状态而不是动作。
了解更多关于静态动词的信息练习题
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