it was 和it is +before这两个的时态要注意吗it is 3 years before they.和it was 3 years before they.从句主句后面的时态怎么用

It is hard the work befor supper it is over 30 years （）shengzhen was established as a special zone……befor since那个为什么 What is taken from you befor you get it?帮忙! what is the date today what is the day befor yesterday?it was ...what is the day after tomorrow?what is the day yesterday it was.....what is the date tomorrow?不对的话 怎么改？ It is和It was是否都可以缩写为It`s as it is/was是什么意思 用“as”连接下列语句：1 There was too much snow on the street.I got to shool later than befor.2 You had better stay at home.It is snowing outside. 英语翻译this is 和 it was 有区别么 it is cold与it was cold问What day is it回答 It is cold还是 It was cold as it was和what it was的区别the road is 3 times as/what it was 3 years ago 用as it was还是what it was请说下理由. it is not until that 和it was not until that 英语翻译Dear Laura,Thanks for your message.yes,i'm having a great time on my exchange program in france.it'seven better than i thought it would be.i was a bit nervous befor i arrived here,but there was no reason to be.my host family is really nic It was very hot yesterday.So( ).And so ( )today.A.it was ;it is B.was it,it is C.it was,is it D.was it,is it Once,I let a ture love,slip away befor my eyes,Once,I let a ture love,slip away befor my eyes,only to find myself regretting when it was too late 强调句it is（was) .that/who,其中it is（was)能不能写成it's/it was不能缩写么? 英语翻译一、句子翻译1.There is something in the wind.2.It's raining cats and dogs.3.Raun befor seven,fine befor eleven.4.Agood winter brings a good summer.5.Tall trees catch much wind.二、写关于一种食物和一种水果的英语短 it was said和it is said 区别it is said that是据说.因为是据说本来就指过去的吧,那it was said不就和it is said一样了吗? it was a sunday 和it was sunday 的区别?