three months 后面的谓语是用is 还是are?为什么?Three months ___ too long for me.为什么要填is？而不填are?

three months 后面的谓语是用is 还是are?为什么?Three months ___ too long for me.为什么要填is？而不填are? several months后面加单数谓语还是复数谓语 是three-month还是 three-months对 After three months at sea,she was glad to reach dry l( )dry 后面是一个l开头的单词 该添什么啊 three months是单数还是复数 three days后的谓语动词是is还是are? for three months用什么提问 in three months提问用什么 One and a half months 后面谓语用单数还是复数?Faster than a good time,a twinkling of an eye on this one and a half months have passed.时间过的好快,一转眼一个半月就这样过去了.So,in my opinion,one and a half months is enoug three months is a long for me ,three months 是复数,为什么有要看成整体 three years ；或one and a half months 作主语 哪种情况下 谓语用单数 , 哪种情况下 用复数? A couple of months后边的谓语动词用单数还是复数,为什么? 问个非谓语动词的问题请问我怎么能确定一个在谓语动词后面的非谓语动词是用不定式还是用动名词? three parts of the article谓语用单数还是复数有一道题是i‘ve already told you that the last three parts of the article___the most difficult to understand.不是说……of……是看后面名词的单复数吗?为啥还用are 我笨, a variety of和 varieties of后面谓语用单数还是复数我问的不是名词但是还是复数，是后面的谓语用什么形式 first three months 请问判断and后面是谓语动词还是非谓语动词,是不是这样判断?如下and后面的动词如果是主语发出的,就用谓语动词?（学名是并列谓语吧?）and后面的动词如果是主语的谓语动词延续下去的动作, 三个月的假期用英语怎么表示?three-months three-month three minths这三个到底有什么差别?到底怎么用?