一、对画线部分进行强调
1.He began his medical research after he got financial help.
答案It was after he got financial help that he began his medical research.
2.He didn’t mention his own plan until the end of the letter.
答案It was not until the end of the letter that he mentioned his own plan.
3.Why didn’t you attend the birthday party of your best friend?
答案Why was it that you didn’t attend the birthday party of your best friend?
