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/carried out /executing/to complete）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。 Although the comparative benefit of industries inside a country is difficult to evaluate specifically, they are often inferred indirectly by observing their genuine ex... https://casestudyanswers23865.imblogs.net/86471339/5-simple-statements-about-buy-case-solution-explained