They agree to keep the homeless dog是动词不定式做什么语

They agree to keep the homeless dog是动词不定式做什么语 agree是不及物动词,那agree to do中不定式做什么成分? They agree to keep the news to ( ) (they) Hot air balloons have burners to keep the air hot.动词不定式做定语还是 The idea is to make students happy and keep healthy.动词不定式作什么 动词不定式I give the dog a bone to eat.为什么是to eat 不是to be eaten It keeps us close to the nature.keep后应跟动词不定式,这里直接跟动词close,是不 People make Easter eggs to celebrate the festival中动词不定式做什么结构 How to do look after you E-dog?to是动词不定式吗? 什么动词后面跟的是【动名词】、【动词不定式】、【不带to的动词不定式】、【动名词/动词不定式】? I don’t know what to do 这是动词不定式做什么成分? They are willing to work hard.句中willing是表语,请问句中的动词不定式是句子什么成分