Present simple现在时
| I | understand |
|---|---|
| you | understand |
| he/she/it | understands |
| we | understand |
| you | understand |
| they | understand |
understand的动词变位
- 词义 理解，懂
- 级别 A1
- 变位类型 不规则 · 变位方式同 stand
这个动词的特别之处
- 在许多时态中不规则——最稳妥的办法是把整张表学下来。 → 不规则动词
- 要记住的三个基本形式：understand – understood – understood。
- 前缀 under + stand：各形式与 stand 相同。
- 状态动词：一般不用进行时，说 understand，而不用 -ing 形式。 → 不用进行时的动词（状态动词）
加粗并带下划线的是词尾。◆标出不合规则的形式。
直陈式
Past simple完成的过去
| I | understood |
|---|---|
| you | understood |
| he/she/it | understood |
| we | understood |
| you | understood |
| they | understood |
Present perfect完成时
| I | have understood |
|---|---|
| you | have understood |
| he/she/it | has understood |
| we | have understood |
| you | have understood |
| they | have understood |
Past perfect过去完成时
| I | had understood |
|---|---|
| you | had understood |
| he/she/it | had understood |
| we | had understood |
| you | had understood |
| they | had understood |
Future (will)将来时
| I | will understand |
|---|---|
| you | will understand |
| he/she/it | will understand |
| we | will understand |
| you | will understand |
| they | will understand |
详见： will
Future perfect将来完成时
| I | will have understood |
|---|---|
| you | will have understood |
| he/she/it | will have understood |
| we | will have understood |
| you | will have understood |
| they | will have understood |
条件式
Conditional (would)条件式
| I | would understand |
|---|---|
| you | would understand |
| he/she/it | would understand |
| we | would understand |
| you | would understand |
| they | would understand |
Conditional perfect过去条件式
| I | would have understood |
|---|---|
| you | would have understood |
| he/she/it | would have understood |
| we | would have understood |
| you | would have understood |
| they | would have understood |
进行时
Present progressive现在进行时
| I | am understanding |
|---|---|
| you | are understanding |
| he/she/it | is understanding |
| we | are understanding |
| you | are understanding |
| they | are understanding |
Past progressive过去进行时
| I | was understanding |
|---|---|
| you | were understanding |
| he/she/it | was understanding |
| we | were understanding |
| you | were understanding |
| they | were understanding |
Present perfect progressive现在完成进行时
| I | have been understanding |
|---|---|
| you | have been understanding |
| he/she/it | has been understanding |
| we | have been understanding |
| you | have been understanding |
| they | have been understanding |
Past perfect progressive过去完成进行时
| I | had been understanding |
|---|---|
| you | had been understanding |
| he/she/it | had been understanding |
| we | had been understanding |
| you | had been understanding |
| they | had been understanding |
Future progressive将来进行时
| I | will be understanding |
|---|---|
| you | will be understanding |
| he/she/it | will be understanding |
| we | will be understanding |
| you | will be understanding |
| they | will be understanding |
命令式
Imperative肯定命令式
| you | understand |
|---|---|
| we | let's understand |
详见： 祈使句
非限定形式
课程中的例句
每个句子都来自本课程的词表或语法专题。动词形式已标出，下面写着它是哪个时态、哪个人称。
Sorry, I do not understand.对不起，我没听懂。
understand — Present simple · I; Present simple · you
I understood every word.我每个字都听懂了。
understood — Past simple · I; Past simple · you
I did not understand one word.我一个词都没听懂。
understand — Present simple · I; Present simple · you
I do not understand this word.我不懂这个词。
understand — Present simple · I; Present simple · you
Sorry, I did not understand that.对不起，我没听懂。
understand — Present simple · I; Present simple · you
I understand the problem now.现在我明白这个问题了。
understand — Present simple · I; Present simple · you · 不用进行时的动词（状态动词）
常见陷阱
错误 I am not understanding this sentence.
正确 I do not understand this sentence.
有些学习者学会进行时以后，就到处使用，连状态动词也不放过。“我现在不太明白这句话”里有“现在”，于是写出 I am not understanding this sentence；还有人把 be 和原形混在一起：I am not understand。正确的说法是 I do not understand this sentence。I am knowing 和 I am wanting 在英语母语者听来，比漏掉一个 -ing 更刺耳。
快速练习
5个填空，先来自上面的例句，再来自变位表。每个回答都会计入你的复习。
继续学习
同一变位类型的动词
相关语法专题
这些形式按语言规则算出——两遍，用两种互相独立的方法——并且和本课程里所有手写的形式核对过。例句都是本课程自己的句子。