此处为何用ing形式

此处为何用ing形式 People can use e-mail English to talk with each other using computer.此处use为何用ing形式 do some reading为何用ing形式 Do you remember being here before?这句中为何用being?可以用came 的ing形式来代替吗? there is some mistake on the road sign,which makes the driver _______confuse 为何用ing形式 Gift giving is different in different countries.此处为什么填give 的ing形式呀? 此处为spread.的什么形式 It's about four sisters growing up.句中的grow为何用ing形式?这里的现在分词表示什么?还有什么同种表达? so she continued waiting for her last child coming out of the egg,这里coming为何用ing形式,及它充当什么句子成分 ing形式? -ing形式, I think doing something for your parents is the best gift.此处为啥填do 的ing形式呀? visit转换为ing形式是visitting还是visiting? 急需动词改y为i的ing形式! 这个句子为何用ING形式?1.Duties like organizing dinners for world leaders and politicians2.Missus Clinton has been campaigning in New York for months还有3.Or welcoming groups to the White House be dying for 和be dying to do通常这种句型不是用动词的ed 形式?这个为何用 ing 这样短语多么?可理解成现在现在进行时而非形容词来记忆么? try的ing形式.为什么try后面是直接加ing而不是去y为i再加ing? 英语中的ing形式没有变y为i再加ing的吗