关于"过去式"He is boiling some eggs,He boiled some yesterday.一、这是书上的一个例子,为什么变了过去式后不加was?二、如果he is boiling some eggs,完全改成过去式是不是就是he was boiled some eggs yesterday,三、

关于过去式He is boiling some eggs,He boiled some yesterday.一、这是书上的一个例子,为什么变了过去式后不加was?二、如果he is boiling some eggs,完全改成过去式是不是就是he was boiled some eggs yesterday,三、 my feet is boiling什么意思 she is near the boiling ,急 He was boiling water over an open fire yesterday.翻译 when he was boiling drinking water over an open he is from a big city 改为过去式 HE IS GOING TO PLAY FOOTBALL的过去式 将he is having an apple改为过去式 is过去式 is过去式 Where is he from?He is from China.改为过去式!急用 求 The kettle's boiling和The kettle is boiling一样吗?两者都是壶开了的意思吗? 一句话英语过去式可以用两次吗比如,He think it is good 要把thing,is改为过去式吗 用过去式的形式来表示He is a student.He works in a factory. he的过去式 the emperor Shen Nong discovered tea when he was boiling drinking water over fire 翻译 英语过去式的句子,是对的吗?句子如下：He thought it was great!thought：（think的过去式） was：（is的过去式)对的吗? grammar,语法问题,请教分析一下此题目!You should be hurry. The ( ) water is cooling down.选项: a、boiling b、boiled c、being boiling d、having boiled