<p class="ql-block"><br></p><p class="ql-block"><br></p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">1、情态动词(can/may/must)十动词原形 </b></p><p class="ql-block"> I can swim.我会游泳。</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">2、助动词(do / does / did)十动词原形 </b></p><p class="ql-block"> I didn't swim yesterday.我昨天没游泳。</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">3、使役动词(let/have/make)+动词原形 </b></p><p class="ql-block"> I let him run.我让他快跑。</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">4、主语非三单(I/you/we/they)+动词原形 </b></p><p class="ql-block"> We often swim.我们经常游泳。</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">5、Why not 十动词原形?</b></p><p class="ql-block"> Why not eat? 为什么不吃呢?</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">6、You'd better 十动词原形 </b></p><p class="ql-block"> You'd better ask him.你最好问问他。</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">7、动词不定式to 十动词原形 </b></p><p class="ql-block"> He wants to drink juice.他想喝果汁。</p><p class="ql-block"><b style="color:rgb(237, 35, 8); font-size:20px;">8、祈使句用动词原形开头</b></p><p class="ql-block"> Open the door,please.请打开门。</p>