who can tell me. 或者anyone can tell me? 我吃面包i eat bread. 我正在吃面包i am eating bread. eat的现在分词是eating eat是动词,变为现在分词后词性改变成动名词,用法就和名词一样了,所以前面要加am.变成am eating.
分词一般表示的动作和谓语动词表示的动作同时发生,或一个动作发生后,另一个动作紧接着发生 比如He is writting a letter他正在写一封信 分词一般时和完成时都可以表示已经完成的动作。 Having passed my driving test,I was able to buy my firet car