到底是have an bad effect还是have a bad effect?如题

到底是have an bad effect还是have a bad effect?如题 have infuence on 和 have an influence on 到底哪一个是对的?并翻译!速求速求 是a bad earache还是an bad earache Because of the bad weather,I have to stay here for an extra day.an extra in the sentence mean____Because of the bad weather,I have to stay here for an extra day.The underlined words in the sentence mean____.注：an extra是划线部分A,another B,th a exercise还是an exercise?到底是when do you have A exercise还是when do you have AN exercise?人人都有不同意见 得了重感冒用英语怎么说?是have a bad cold还是have got a bad cold have a lunch到底lunch可不可数?Let’s have（） lunch togetherA a B an Cthe D/前一句是It's twelve now之后是上面的 have a bad hair day的中文意思是? I have a bad 1.She wants her child to have _____ academic education and sends him to _____ university.A an,/ B /,/ C an,a D /,an到底是A还是C？ bad LUCK!to be an bad an argument什么意思 快,an English problemHe always doesn't have breakfast,so he has a bad 下面应该填stomach还是stomachache请大家说说自己是什么职业先，因为这题很有争议，答案是第一个可老师说第二个 We have to wear _____ uniform to school.A.a B.an C.the D./ 我选A,可有的答案是A,到底要求原因 we have an English class意思是? ( ) __________ interesting story I have ever heard!A) What B) How C) What a D) What an请问是C还是D?到底是因为有interesting而用an 还是主语是story而用a? bad的比较级到底是worst还是worse我们老师说worst是比较级……到底谁对？ 是have an effect on 还是have effect on?