add...to...把……添加到……
(教材Ps4)English idioms are a way of adding colour to thelanguage.
英语习语是给语言增添色彩的一种方式。
(1)add to 增加;增添 add up 加起来 add up to 加起来达到
(2)add that...补充说……

①Would you like to add more sugar to your coffee?你想要在咖啡里再加些糖吗?
2As far as 1 know,the bad weather_ added to_theirtrouble.
据我所知，恶劣的天气增加了他们的困难。
③Please  add up all the money I borrowed from you.把我借你的钱全部加起来。
④His entire school education added up to no more than ayear.他受的全部教育加起来不超过一年。