1. 从开始：before long / / 不久以后 | begin with / / 从...开始 | both...and / / 即...又...,两个都

2. 以...开始：agree with同意;与..一致 | begin with以...开始 | compare with与...相比

3. 以...开始;开始于：before long 不久以后 | begin with 以...开始;开始于 | behind schedule 落后于预定计划

4. 首先：63. beg sb to do sth请求某人做某事 | 64. begin with 首先 | 66. at the beginning of ...的起初