开始做

• start to do sth.
• start doing sth.

例句

1. 1954年，中国的外科大夫开始做心脏内部手术。
   In1954 Chinese surgeons began to operate inside the heart itself.
2. 我开始做这项工作时，遇到许多困难。
   I encountered many difficulties when I first started this job.
3. 开始做饭前，我还得去买些厨房用具。
   I have to buy some kitchen utensils before starting cooking.