1. 助动词do/did/does/和情态动词后接动词原形。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/  0Y`?iS)_.!9+/j_)FroG]

    2. had better... / Why not...？ / Will you please...？ / Shall we...？ / Let...等句型后接动词原形。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ 6eILf~%8}jI4pwFroG]

    3. 感官动词see/hear/watch/feel 和使役动词make/have/let等后接动词原形作宾补。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ I2W! +mrBI~Z8aTFroG]

    4. help后接动词不定式作宾补时的to可省也可不省。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ C&n pqpTb~ss/=g!FroG]

    5. would rather 后接动词原形。如：[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ it=^",!&OH=`pFroG]

    I would rather stay at home than go for a walk. 我宁愿呆在家里而不愿去散步。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ Koz0]bEzmlW39q"\AvgFroG]