He can come to my party this evening.(改为否定句) 的原因

问题描述:

He can come to my party this evening.(改为否定句) 的原因

He can't come to my party this evening.
陈述句变否定句的方法:
句中有动词be( am ,is ,are ,was ,were),情态动词(can / could ,may ,must ,will ,would 等),助动词(如完成时态中的HAS / HAD ),变否定句时直接在这些词后加NOT ;否则要加助动词Do ,Does (主语第三人称单数),Did (一般过去时),原来的动词要还原;另外,句中有SOME 是一般改为ANY ,如果有AND 要改为OR,(因为否定句中的并列要用OR)already 改为yet(且放在句末);祈使句的否定句是直接在句首加Don’t ; ( 如Open the doo r,please .-> Don’t open the door ,please .) 不定式的否定句是在不定式前加NOT ,如 She asks the boy not to play in the street .