请解释buy为什么用ing 形式She enjoyed herself making the assistant bring almost everything in the window before finally buying the dress she had first asked for.

请解释buy为什么用ing 形式She enjoyed herself making the assistant bring almost everything in the window before finally buying the dress she had first asked for. where is she going?she后为什么用ing形式 Nancy regrets buying the dress.这句话buy为什么用ing形式的?请帮忙分析下句子成分, 请问这里surprise 为什么用ing 形式?请大神们解释下这里的语法 buy的ing形式 she always goes swimming （为什么swimming用ing形式） 英语翻译representing himself an international association.然后请解释这里的represent为什么要用ing形式 英语翻译representing himself an international association.然后请解释这里的represent为什么要用ing形式 为什么会用ing形式? 为什么要用ing 形式 buy(ing式）sing(ing式）she(宾格）five（序数词）is not（缩写形式） supposing she doesn't come,what shall we do?这里suppose为什么用ing形式 what did she have going for her 这里going为什么用ing形式? she has always loved drawing.love为什么用ing形式.打错了。是draw I want to know something about going to Tokyo for a holiday.为什么go,用ing形式,请解释是什么语法现象造成的. I am (wondering) if you can tell me what a secretary should do for a meeting括号中为什么用ing形式请解释 高中英语语法-动词ING形式的符合结构请用例句解释：当-ing形式的逻辑主语与句子主语不一致时,要在-ing形式之前加上无助代理或名词所有格. Seeing is believing.请翻译此句,并解释为什么用ing形式,为什么不说成See is believe.那believeing到底是believe的形容词形式，形容词做宾语，还是动名词做宾语。