254　enter和enter into

① enter表示“进入某处”，如房子、教室等时，是及物动词，直接跟宾语。

We entered into the classroom.

We entered the classroom.

我们进了教室。

② enter into表示“开始，着手”某项讨论、协定等。

enter into business 开始经商

He has entered into a contract with the company. 他同那家公司达成了一项合同。

他们开始讨论有关税务的事。

They entered a discussion about taxes.

They entered into a discussion about taxes.