英语翻译it is necessary for us to do first aid when we ___1____ someone injured in an accident.When we do first aid,we must pay attention to ____2___ important things.First we must make sure whether the person is still breathing.Open his mouth to

英语翻译Maybe it is a little difficult,but it's really necessary.求翻译~ if it is necessary /if necessary /when it is necessary 意思一样吗 when it is necessary 为什么可以变为when necessary? it is necessary for you to work Is it necessary to learn grammer It is necessary for sb to early 是什么副词It is certainly necessary! It is necessary to do 的例句 英语翻译给我翻译：What is said now is all not real?Is it necessary to have not cheat?急用, 英语翻译高手来（在线等待）Want to have lived full, it is necessary to enrich themselves请翻译一下 英语翻译it is necessary for the global community to place greater emphasis on the impact of globalization on human welfare. 英语翻译However,to compare directly it is necessary to correct for fine content and for relative density. 英语翻译It mistakes something that is necessary for its conclusion to follow for something that ensures that the conclusion follows. 英语翻译应是It is necessary —— you——— a telephone call him at once. i feel it necessary 的句子成分分析下为啥不是 it is necessary 关于necessary.it is necessary to do sth.it is nec关于necessary. it is necessary to do sth. it is necessary to doing sth. 两者有什么区别?什么时候用to do .什么时候用 to doing?请回答, we think that is necessary还是we think that it is necessary is it necessary to tell his father everything?此句用is that necessary