恨不得

This phrase expresses a desperate wish to fulfill something (that one usually cannot achieve). It is usually followed by a verb serving as the object. Adverbs such ad “上，都， 就，全 ” are often used in front of the verb, for example,

他恨不得马上就能到太空旅行。
我很不得吧字典上的生词都记住了。
他妈妈总觉得自己有病，恨不得吧全身都检查一遍。