第二十四天。。。
夏天就是最好的时间- 夏天是最好的时间.
-dont use 就, 就emphasizes a fact, ie: 我就是男孩- i AM a boy. "Summer is the best time" is an opinion, it isn't a fact.
其实暑假是最好的时间!- 对。correct.
我昨天睡觉睡了几乎十二小时。- Use 了instead of得. 得would be used to state a degree or the result of something. i.e.: 晚饭做得真不好!-Dinner was made really bad! 他中文说得非常好-he speaks Chinese extremely well.
因为父母都已经在上班,所以没什么人在家里叫我起床。- replace 没有 with 没什么 so the sentence then becomes "my parents were already at work, so there wasn't anyone at home to call me to get up" 没什么 is more negative,example: 没什么菜-There isnt any food.
我打算整天没做什么-- 我那天整天什么(事)都不做。-I'm not doing anything that day.(不should be used instead of 没.) 什么都没做-would mean 'havent done anything',example:她昨天一整天什么事都没做-She hasnt done anything all day yesterday. 没 is for actions that hasnt happened: 我没吃西瓜-I didn't eat watermelon. 我没去-I didnt go.
可是半天后我自己觉得很懒。-this is good.
结果我晚上决定了去运动。我感觉马上变好了。运动的影响对心情真棒! 然后/后来我决定去运动。我感觉(心情)马上变好了。运动真的能让心情变得很好. -for the last one, my Chinese friend helped me correct this,and he couldn't express why it was wrong before. If you need more help message me.