请问第一个increase为何要加-ing?Increasing the low temperature compressor cooling capacity also increases its efficiency

请问第一个increase为何要加-ing?Increasing the low temperature compressor cooling capacity also increases its efficiency ask for an increase in salary 为什么要在for后加an?今天看见一个例句He had the audacity to ask for an increase in salary.不明白为什么要在for后加an?for后不能直接接increase in salary吗?还是说an increase in salary是固 第一个序号,那个句子fall down 前为何要加to 请问I'm in shock! 我感到震惊!这句话中shock前为何要加in he is doing some shopping.请问shopping前面为何要加一个some做什么呀, 英语翻译这是一本书名……为何之后要加一个“in context”? 为何数字要三位加一个逗号 第三行的get为何要加ing? increase in price 与price increase区别 inflation=a continuing increase in prices,or the rate at which prices increase,请问the rate at which prices increase. increase in demand是什么意思 there will be an increase in electricity needs 为什么needs 加s there has been a big increase in prices.请问词句怎么是什么句型?另外,an increase in是固定结构嘛?希望有例句, 4-fold increase请问是什么意思? In the middle of the night,two boys woke up and began shouting.请问后半句是何时态?为何加ing? Increase in 和 Increase by.有什么区别啊? 高中英语短语辨析increase in increase by increase with 的区别 请问这句话里的in number的意思?Aids paitients are increasing in number every day.increase已经有增长的意思了,为什么还要加个in number呢?在这里in number又作什么成分?原本意是总计的意思,但是在这个增加的