do+系动词+动词原形的用法答:变疑问,往前提,句末问号莫丢弃。变否定,更容易,be后not莫忘记。疑问否定任你变,句首大写莫迟疑 还有时态别忘记,单数was复数were。三、动词原形的用法:与助动词或情态动词do, does, did, shall, will, should, would, may, might, have to, must, need, ought to等一起构成谓语的动词时...
助动词后面如果跟俩个动词两动词之间需要加to吗?答:3、do ( does, did)4、shall ( should) will(would)除了助动词be 和 have 后面不能加动词原形,其余助动词后面都+动词原形 与助动词或情态动词do, does, did, shall, will, should, would, may, might, have to, must, need, ought to等一起构成谓语的动词时,要用原形。两个实意...