electricity is able to do work请帮我分析一下这句话的句子成分,谓语是什么,不定式在这里到底作什么语

electricity is able to do work请帮我分析一下这句话的句子成分,谓语是什么,不定式在这里到底作什么语 Electricity is like water,partly. Electricity 1.why metals are able to conduct heat and electricity?2.why the melting point of magnesium(649 c)i1.elplain why metals are able to conduct heat and electricity?.2.explain why the melting point of magnesium(649 c)is much higher than the melting point 用英语解释下列句子（同义词替换）What is electricity like?The newpaper contains some advertisements.He is able to finish the job by himself.Can you get me some paper?It is used to cook. electricity is like water, partly同义句 Gas is chaper than electricity(保持句意不变）Electricity is ___ ____than gas Gas is cheaper than electricity.句型改变改变句型Gas is cheaper than electricity.（保持句意不变）Electricity ____ _____ than gas. what is electricity?can you tell me同义句改写 what is the beginning of electricity,the end of time? Electricity is like water,partly.改为同义句 Electricity has always been around a__________ it is invisible. Electricity is more dangerours than water.急用.切记啊 What is the begining of electricity,the end of time? 以electricity is our good servant为题写一篇作文 electricity is very useful and we should--------(use) it properly Electricity is a form of energy得同义句 是be able to 还是is able to