慢速英语:Changing Prepositions With 'Provide'

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短语讲解：

1. This adds up to 150 chances to make mistakes.

add up to 总共，合计
例句：The bills add up to exactly $100.
这些帐单加起来正好一百元。

2. We often use this expression when we talk about parents providing for their family.

talk about 讨论，谈论
例句：He went on to talk about his accident.
他接着谈到了他的意外事故。

3. But we hope that we have been able to provide assistance to all of our listeners and readers.

be able to 能够; 能
例句：He will be able to take up his normal routine shortly.
他不久就能处理日常事务。