展开全部 在but后何时要接带to的不定式，何时要接不带to的不定式有一条简单的规则。那就是前面动词是do（does/did/done /undertaking/to carry out）时，后接不带to的原形不定式；如前面用的是其他的动词，则后面的不定式要加上to。 JustAnswer appears at the necessity of cyber awareness as well as approaches you can establish a straightforward cyber security approach. Examine far more Case studies is ... https://trevoriowdr.onesmablog.com/little-known-facts-about-case-study-solution-77713146