Begin Equation Begin Split
. .
Begin Equation Begin Split
Begin begin began begun beginning begin begin . .
2 begin by Let s begin by pushing the power button on the computer begin by 1> begin with是‘以什么开始’或‘从什么开始’.比如：Let's begin with this problem.“我们从这个问题开始吧”.He began his talk with a joke.“他以一个笑话开始了谈话（报告）”. 短语to begin with 首 …
Begin Equation Begin Split般来说，begin to do和begin doing可以互换，但在以下三种情况下，用to do： 1. 主语不是指人，而是it等。如：It began to rain. 2. begin后接表示心理活动的词。如：begin to know … Begin 2 begin