问题补充：
do+动词原形强调句型如果是第三人称,或者是过去式将来时态怎么用?
答案：
do do does do did do
I do love her.He does love her.We did love her.
======以下答案可供参考======
供参考答案1:
像这种、一般都省略的。
-What did you do yesterday?
-I did do homework./I did homework.
一般都是用后面一种说法。很少出现前面一种。
楼上的、举例的很好。
