enter的過去式是什么

　　enter例句分享

　　The investigation has entered a new phase.

　　調(diào)查已進(jìn)入新階段。

　　Please do not enter before knocking on the door.

　　進(jìn)來前請先敲門。

　　He showed me how to enter data into the computer.

　　他告訴我如何將數(shù)據(jù)輸入電腦。