一、謂語動詞用do, does, did表示強調
在肯定句中， 可以用do強調謂語部分， 可謂為：“務必”、“一定”、“真的”、“確實”等。這時動詞要用原形。
He does like to eat noodles。
She did send me a postcark as I expected。
Exercises 6 Choose the best answer to complete the following sentences:
1. It was from the earlest time ___________ men began to study
the natural phenomena and heavenly bodies。
A. when B. where
C. that D. how
2. It ___________ his father ___________ made him a lawyer。
A. were…that B. was…that
C. was…which D. is…which
3. What ___________ are you looking for？
A. hell B. the hell
C. a hell D. hells
4. He is ___________ honest because he often tells lies。
A. anything but B. nothing but
C. something but D. but anything
5. It is ___________ that should be given priority to。
A. the government who decided
B. what has the government decided
C. only the government has decided
D. what the government has decided
