This is the first time (that) I have been to the summer palace .1,the first time 不是连词吗?怎么可以这么用?2,that,为什么可以省略,是引导什么从句吗,后面的句子也是完整的呀?只有这么多分了,就只能给这么多

This is not the first Around this world ,the last is first. This is my first bag中first前要加the吗 this is ____lesson 1.we first 2.us first 3.the our first 4.our first this is the first lesson=this is________. this is the first time this was the first time 怎么用,有什么区别? This has been the first time与this is the first time有什么区别 This is the first man ___(walk)to the moon . lesson the is first this week of the . This is the first two sections of the book. This is the first lesson ( )the new term day,term,of,this,the,the,is,first,new 英语翻译Hi Sarah,Sorry this is so late,I have been out of the country(China) for the past few weeks in Dubai in the UAE in the middle east,so your sister was right plus we only had limited access to the web,so this is the first time I have had ti This is My first This is the first time that I ______(be)there NO,This is the first time I chat with you This is the first time that I_the Summer Palace.(visit) the day this it is first term of造句