there is no doubt that to make a reservation early and make up all the organization as early as a week before the event,everything will go well with the place you rent and you will have an allowance in case anything else goes wrong.疑问：1—a wee

there is no doubt that to make a reservation early and make up all the organization as early as a week before the event,everything will go well with the place you rent and you will have an allowance in case anything else goes wrong.疑问：1—a wee
there is no doubt that to make a reservation early and make up all the organization
as early as a week before the event,everything will go well with the place you rent
and you will have an allowance in case anything else goes wrong.
疑问：1—a week before the event：翻译成：在这件事的前一周
2—before这里是介词 还是副词 3— a week before 是个短语,表示前一周 4—请简单讲解本句

there is no doubt that to make a reservation early and make up all the organization as early as a week before the event,everything will go well with the place you rent and you will have an allowance in case anything else goes wrong.疑问：1—a wee
1—a week before the event：翻译成“在这件事的前一周”是正确的.
2—before 放在名词 the event 前,当然应该是介词 还是副词
3—单说 a week before ,before是副词.两个词或更多的词组合而成的造句单位就是短语,短语有固定短语,也有临时组合成的短语,a week before（一周前）属于后者.
4—请简单讲解本句
主句：There is no doubt 没有疑问
同位语从句：that There is no doubt that to make a reservation early and make up all the organization as early as a week before the event, everything will go well with the place you rent and you will have an allowance in case anything else goes wrong. 其中
* 关联词：that ——用来引导同位语从句
* 目的状语：to make a reservation early and make up all the organization as early as a week before the event, 为了及早预订并早在该活动的前一周建立整个组织/团体
* 并列主句 1：everything will go well with the place you rent（you rent 是省略关系词 which 的定语从句） 你租用的场所一切都会准备妥当
* 并列主句 2：and you will have an allowance in case anything else goes wrong. （in case anything else goes wrong） 万一其他事情没有搞妥,你就会留有余地.
5——短语：
make a reservation 预订、预约
make up 建立起来
as early as 早在
go well with .在...上走运、对...有利、…进展顺利
have an allowance 给予预留、得到接受
in case 假使, 如果, 万一
go wrong 搞不好、出错

a week before the event 翻译为：这件事一周之前；before的词性只能是介词，没有其他词性。
there is no doubt that 是固定句式，that从句为同位语从句，从句中to make a reservation early and make up all the organization as early as a week before the event作状语