日記的正文是日記的主要部分，寫在星期和日期的正下方，可以頂格寫，也可以內縮3至5個字母的空間。由於記載的內容通常已經發生，謂語動詞多用一般過去時。但也可根據具體情況，用其它時態。如：記敘天氣、描寫景色，爲了描寫生動，可以使用現在時，以表現當時的情景。再如文後發表感想或評論可用現在時態或將來時態。記日記力求簡單明瞭，有連貫性。若有文字提示，則應重視提示，把握要點。在句式上儘量使用簡單句，以防繁雜，造成語法、句型錯誤。
一、英文日記格式
英文日記通常由書端和正文兩個部分組成。日記常以第一人稱記下當天生活中的所見、所聞、所做或所想的事情。中、英文的日記三格式大致一樣。英語日記的書端是專門寫日記的日期、星期和天氣的。左上角是日期(年、月、日)、星期。右上角寫上當天的天氣情況，如：Sunny, Fine, Rainy, Windy, Snowy, Cloudy等。
1.日期表達有多種形式。年、月、日都寫時，通常以月、日、年爲順序，月份可以縮寫，日和年用逗號隔開。例如： December 18, 2003 或者 Dec. 18, 2003
A) September 1, 2004或September 1st, 2004也可省略寫成Sept. 1, 2004或Sept. 1st, 2004;B)the 1st of September in 2004(月份不可以縮寫)
B)只有月、日
September 1或September 1st(月份可以縮寫)
C)只有年、月
September 2004或the September of 2004(月份不可以縮寫)
以上的1或1st都應讀作the first。
2.星期也可以省略不寫，可將其放在日期前或後，星期和日期之間不用標點，但要空一格，星期也可縮寫。如：
Saturday, October 22nd, 2004;October 22nd, 2004 Saturday
3.天氣情況必不可少。天氣一般用一個形容詞如 :Sunny, Fine, Rainy, Snowy 等表示。寫在日期之後，用逗號隔開，位於日記的右上角。如：
Saturday, March 4, 2004, Windy;1st January, 2004, Fine
1. 注意日期、星期和天氣的書寫位置。
日期和星期要寫在正文的左上角，其順序多是“星期 + 月、日、年”，也有把星期放在後面的，如“ 2003 年 11 月 22 日，星期一”可寫爲“ Monday November 22， 2003 或 November 22， 2003 Monday ”。
日記的第一行，要寫明年、月、日與星期，然後要寫明當天的氣候狀況，如果是遊記，還要寫明地點。
這一部分中天氣狀況比較難寫。下面是一些常用的描寫天氣的英語詞語：
晴 clear 陰 overcast 多雲 cloudy 小雨 light rain
大雨 heavy rain 毛毛雨 drizzle 陣雨 shower
東風 east wind 南風 south wind 西風 west wind
北風 north wind 西南風 southwester 東南風 southeaster
東北風 northeaster 西北風 northwester
氣溫 temperature
炎熱 scorching heat 寒冷 icy cold 下雪 snow
例文;
下面是一篇關於寒假的日記。
January 18, 2011 Friday Sunny
I am free now as I am spending my winter holiday.
Although we have some homework, we can finish them in several days. And the rest time we can make good use of. My god! We have been very tired after hard studying. In winter holidays, I want to have full sleep and eat good food in order to replenish myself. Last but not the least, I will have a good rest.
I have rested for a week. I began to feel bored. So I went out with my friends. They are my best friends in the middle school. We didn’t go to someplace special. We just saw the other. We had lunch together. While we were having lunch, we were still talking about the new school and new friends. Yes! A year later, we have grown riper. And we learned much more things and got new life. We haven’t enough time to play, to waste and to lose the way. We only have two years. Two years to go, we will get the real life which belongs to us.
最新英語日記格式二：
英語日記的格式與漢語相同。在正文上方自左起頂格寫上日期、星期幾和天氣情況。正文另起一行，內容應有所選擇，記有意義、感受最深的事，切忌流水賬。有話則長，無話則短，甚至三言兩語亦可。通常採用一般過去時或可靈活運用。日記的.寫作格式如下：
1)
Sept 23, 1991, Wednesday Cloudy
It is three months since I began this diary…
2)
Friday, May I Fine
Today is May Day…
月份除May, June, July外，其餘可用縮寫形式。常用來表示天氣的詞有Fine, Cloudy, Rainy, Windy, Snow等。
【範例】
Oct 3, 1999, Sunday Rainy
It was raining outside when I got up early in the morning. It's too bad, I had to go to school by bus. I said to myself. It was almost seven o'clock before I left home. I put on my raincoat and ran to the bus stop in a hurry, for I thought a lot of people might be waiting there. Hardly had I got there when a bus was coming. I got on the bus immediately, hoping it was possible for me to take a seat. I saw an empty seat and took it. But I found an old lady standing behind me. I stood up at once and was about to ask her to take the seat when a young girl in a modern skirt made a dive for it. I could hardly believe it. I glared at her, thinking“What bad manners! She cares for nobody but herself. Won't she grow old in the future?”
翻譯：外面下着雨，我很早起牀。這太糟糕了，我不得不乘公共汽車去學校。我對自己說。差不多七點在我離開家之前。我穿上雨衣，匆匆跑去公共汽車站，因爲我覺得很多人可能會等待。我剛到那兒的時候，公共汽車來了。我立即乘公共汽車，希望我可以坐下。我看到一個空的座位了。但是我發現在我後面的老太太站。我立刻站了起來，打算讓她坐在一個現代的裙子的小女孩撲向它。我簡直不敢相信。我瞪着她，思考“什麼不禮貌的!她很關心別人而自己。她不會老在未來?“