3. throughout，all over，all through

三者都有"遍及，贯穿"之意，但在用法上有所不同。

(1)①throughout作介词，接表示时间或地点的名词，意思是"在整个期间""从一端至另一端" 即"在整个地区"。

The news spread throughout the country. 这个消息传遍了全国。

It rained throughout the night. 雨下了整整一夜。

②throughout作副词，"到处、全部、处处、始终、彻头彻尾"。

The room is painted throughout. 这屋子全部油漆一新。

The boy remained silent throughout. 那男孩始终保持沉默。

(2)①all over "在(遍及)......的各部分"，只接表示地点的名词。

Computers will be used more and more in the future all over the world.

将来全世界要越来越多的使用电脑。

②all over作副词，"到处都是、全部结束"。

He is wet all over. 他浑身湿透了。

The war was all over. 战争彻底结束了。

(3)all through "在整个......期间"，后面接表示时间的名词。

Some cold-blooded animals hibernate all through the winter. 一些冷血动物整个冬天都冬眠。

4. (1) add...to... 把 ... 加上 / 到 ...

If you add 100 to 1, you get 101.

Please add my name to the list.

　 (2)add to 增加，加强

A little sugar will add to the taste.

His illness added to the family's trouble.

(3)add up to 总计达, 总共有.

His whole school education added up to no more than one year.

他所受的全部学校教育加起来不过一年。

　5. latest, lately, late , later

(1)latest 是 late 的最高级，表示"最新的、最迟的"。如：

He was the latest comer.