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1.provide sb. with sth.;provide sth. for sb.向某人提供某物，供给

如：My parents provide me with food and drink.

This firm provided a big house for the old man.

Provide还可以构成如下短语：provide for sb.供给某人生活所需;provide for sth. 为某事可能发生做准备;provide against sth.防备发生某市、预防某事

2.a number of 与the number of的区别

a number of 相当于some，a few; a great/large number of相当于many，quite a few; the number of指的是“…的数量”。

如：The number of the students in our school is 5，000. A number of them are going to study in the university.

3. According to the survey，the most popular choice of job is computer programming.

according to表示1)根据所说、所示;2)随…而作变更

如：According to Tom，the English teacher is really a good teacher.根据Tom的说法，英语老师是一位真正的好老师。

According to the amount of work we do，we will be paid.

我们的报酬随工作量而定。

4. For sure，you have helped make it possible for me to have “Lucky”，…

for sure相当于without doubt无疑

如：I think he lived in Shijiazhuang，but I can’t say for sure.

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