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/  /i !ymxltc{!D{QFroG]

    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/ 5a.Fy 
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    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/ S"#T`D3o$*n^dE4gFroG]

    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/ *HU.wI*uw `0WQqb4FroG]

    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/ r!_\vMOG8c9;_ FroG]

    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/ wR.^=.#[E2u@oGFroG]