求专业人士进：是have been increased 还是have increased?两种用法我都看到过,是都可以用无区别还是有区别并且分不同的情况使用?The production of grain has been increased by four times this year.为什么这里用ha

求专业人士进：是have been increased 还是have increased?两种用法我都看到过,是都可以用无区别还是有区别并且分不同的情况使用?The production of grain has been increased by four times this year.为什么这里用ha 石膏粉都有哪些用途?石膏粉是从哪里来得?求专业人士回答,非专业莫进. I have been there,have been 是have been in还是have been to的缩写? 英语翻译求专业人士 非专请绕行 thesis on phase transiions in the two-dimensional,frustrated XY model 求专业人士帮忙翻译下主要是frustrated XY model这个很不理解. 正常人的口腔是酸性还是碱性?求专业人士回答,最好附上参考文献, 在工业上 mill water 改怎么翻译呢 是化工中的求专业人士解答 have/has been in 求具体用法 I am in the classroom.这句话是什么结构?I是主语,am是be动词,in the classroom是地点状语那这句话是主系表结构还是主谓结构?求专业人士解答! 心理学的专业英语翻译作业啊~求高手~Community and neighborhood interventions have been successful in reducing prob-lem behaviors (for a review, see Biglan &Hinds 2009). As these researchers suggest,there is scientific value in shi have been in I have been in. 请问13公斤水蒸气的温度是多少,由每由计算公式?求专业人士，公斤指的是压力 走过这森林是用go across the forest还是go through the forest?求专业人士解答! 这个是蚂蚁还是蜘蛛.有没有专业人士。 现在完成时中have been in 和 have gone to 有何区别?1#：是have been in 不是have been to。 Have you ever been to France? Yes,I--there last August. A:have gone B;went C;have been D'were选出答案,并解释说明A我可以排除，可是B.C.D这三个选项我有些分不清楚，迷茫，希望专业人士帮忙解释一下 I might have been in love before是什么歌