关于“would rather”后接动词形式的问题，综合权威资料和用法解析如下：

一、基本用法

后接动词原形

“would rather”后必须接动词原形，且常省略为“would rather”，表示在两种或多种选择中的优先倾向。例如：

- I would rather do yoga than go to the gym.

- They would rather work than live on welfare.

否定形式

否定结构为“would rather not do sth.”，例如：

- I would rather not eat spicy food.

二、常见搭配

would rather do than do

表示在两种选择中明确偏好，例如：

I would rather call you now than later.

would rather have done

表示对过去情况的虚拟偏好（与过去事实相反），例如：

I would rather have finished the task yesterday.

三、易混淆点辨析

与“prefer to do”的区别

- “prefer to do”后可直接接动名词（doing），表示习惯性行为，例如：

- I prefer to walk than drive.

- “would rather”后只能接动词原形，不能接动名词，例如：

- *Wrong:* I would rather walking than driving.

- *Correct:* I would rather walk than drive.

与“would like to do”的区别

- “would like to do”表示现在或未来的意愿，例如：

- I would like to call you tomorrow.

- “would rather”后接动词原形，且通常用于表达对已发生或未发生的选择偏好，例如：

- *Wrong:* I would rather like to call you now.

- *Correct:* I would rather call you now than later.

四、补充说明

虚拟语气：

在“would rather”引导的从句中，谓语动词通常用过去时态表示现在或未来，例如：

She would rather have finished her homework earlier.

用法示例

*选择偏好*：He would rather play football than watch TV.

*虚拟语气*：They would rather the meeting started already.

综上，“would rather”后应接动词原形，且需根据语境选择“do”或“doing”，同时注意与“prefer to do”和“would like to do”的区别。