现在进行时的题干信号特别明显：句尾一个 now、句首一个 Look，答案就锁定 am、is、are 加 doing。丢分多在两处：ing 拼写双写漏掉，或者该用进行时的地方写成了原形。
结构与标志词
- 结构：主语 + am / is / are + 动词 ing
- I am reading. / He is playing football. / They are watching TV.
- 标志词：now、right now、at the moment、these days
- Look! They are playing basketball. Listen! Someone is singing.
- 问句把 be 提前：Are you listening to me? 否定在 be 后加 not
动词加 ing 的拼写规则
| 规则 | 原形 | ing 形式 |
|---|---|---|
| 一般直接加 ing | read / play / eat | reading / playing / eating |
| 以不发音的 e 结尾，去 e 加 ing | make / write / dance | making / writing / dancing |
| 重读闭音节，双写末尾辅音字母加 ing | sit / run / swim / get | sitting / running / swimming / getting |
| 以 ie 结尾，变 ie 为 y 加 ing | lie / die | lying / dying |
双写的判断标准：词尾是辅音加元音加辅音三个字母，且重音在最后一个音节。begin 变 beginning，open 重音在前不双写，变 opening。
易错点：状态动词不用进行时
like、love、want、know、have（拥有）这类状态动词表示心理状态或 possession，一般不用进行时，不说 I am knowing 或 She is liking。判断方法：动作能「正在做」才能用进行时，感情、意愿、认知类动词通常不行。考题常设 I am wanting a pen 这种选项，见到状态词配进行时直接排除。注意 have 表「吃、进行」时可以用：They are having lunch。