简要回答你的问题：

all over + 地点名词 （over 用于范围、面积）

all over the world

all over the country

all over the place

all through + 时间名词 （through 用于长度、跨度）

all through the year

all through the summer

all through the meal

My friend Li Hua went to school without his homework finished. He played online games all over the weekend.

这句话把over 改为了 through 的原因如下:

(1)all over 后面接地点名词(all over the country/the world)

(2)all through 后面 接时间名词(all through the year)

all over, all through, throughout 区别和用法讲解如下

以上2个组词和一个单词都有“遍及、贯穿”的意思，但其用法有所不同

【1】all over +表示地点的名词表示对后面名词的面积位置覆盖遍及（意思是“到处；遍及”）

Students all over the country are facing an uncertain future.  

全国各地学生前途未卜。

The bank has branches all over the country.  

那家银行在全国各地设有分行。

 His comments have inflamed teachers all over the country.  

他的评论激怒了全国教师。

The reformer's fame spread all over the country.  

这位改革者名震全国.

Snow is falling all  over the country.  

全国各地都在下雪.

Just before he was killed, he sent a message to his comrades all over the country.

在他被杀害之前，他把信送给了全国各地的同志们。

They are to be found all over the world.  

它们遍布于世界各地。

Malaria is bursting out again all over the world.  

疟疾突然又在全世界流行起来。

【2】all through+表示时间的名词表示从头到尾经历后面的时间名词（意思 “自始至终;从头到尾”)

The light was burning all through the night.

灯彻夜亮着。

What if it rained and then froze all through those months?  

要是那几个月一直又下雨又冰冻怎么办？

Maggie paints industriously all through the summer.  

玛吉整个夏天都在勤奋作画。

We're playing in New Zealand, Australia and Japan all through November.

整个 11 月，我们都在新西兰、澳大利亚和日本巡回演出。

Saga features trips for older people at home and abroad all through the year.  

“传奇”旅行社为老年人提供全年的国内外旅游服务。

【3】throughout+时间/地点名词 表示经历整个时间或者覆盖整个面积。

(1)接时间名词：“自始至终;从头到尾;贯穿”表示从时间开始到结束。

He worked throughout the night and the next day.

他工作了整整一夜和第二天一天。

The national tragedy of rival groups killing each other continued throughout 1990.

敌对派别相互残杀的国家悲剧 1990 年全年都在上演。

(2)接地点名词：“遍及;遍布”表示覆盖后面名词整个面积或者位置。

The disease spread throughout the country.

这种病蔓延全国。

'Sight Savers', founded in 1950, now runs projects throughout Africa, the Caribbean and South East Asia..

创始于 1950 年的国际防盲及救盲组织如今在非洲、加勒比海地区和东南亚各地都开展项目。