欧式jumpstart需要什么认证

欧式jumpstart需要什么认证

我也不是特别清楚....给个解释很清楚滴~~共同学习一下啦 呵呵1) 谈及一项长期活动或开始一种习惯时，使用doing. How old were you when you first started playing the piano? 你几岁时开始弹钢琴?2) begin, start用进行时时，后面动词用不定式to do I was beginning to get angry。 我开始生起气来。3) 在 begin, start 后接know, understand, realize这类动词时，常用不定式to doI begin to understand the truth。 我开始明白真相。 4) 物作主语时 It began to melt. 一般情况下没区别只有三种情况只用start to do sth.1.start本身用-ing He is just starting to write the letter.2.主语是物不是人The ice started to melt.3.其后的动词与想法\感情有关She started to understand it.