for the first time和the first time的区别：含义不同、用法不同。for the first time作为介词词组，意为第一次，在句中一般用作状语，修饰动词；the first time意为初次、第一次…的时候，后面可接that/when引导的定语从句。
一、for the first time的含义及双语例句
for the first time意为第一次，例句有：
1、For the first time in years, she felt in command of her life.
多少年来第一次，她觉得生活掌握在自己的手里。
2、I'll never forget hearing this piece of music for the first time.
我永远不会忘记第一次听到这首曲子的情景。
3、For the first time, a woman will be the keynoter at the convention this year.
在今年的大会上将首次由一位女士当主要发言人。
4、For the first time the government's actually put some money up front
政府居然预付了一笔钱，这可是有史以来第一次。
5、House prices are rising for the first time since November
房价自11月以来首次上涨。
6、There is no feeling on earth like winning for the first time.
初尝胜利滋味的感觉真是无可比拟。
二、the first time的含义及双语例句
the first time意为第一次;初次;第一次……的时候。例句有：
1、It was the first time I had set foot on American soil.
那是我第一次踏足美洲大地。
2、It was the first time that she had lived independently.
那是她第一次独立生活。
3、It was the first time I had set foot on African soil.
那是我第一次踏上非洲大地。
4、For the first time in years, she felt in command of her life.
多少年来第一次，她觉得生活掌握在自己的手里。
5、This is the first time the company has ventured into movie production.
这是这家公司首次涉足电影制作。
