38. If you __________ medicine this morning, you might __________ better.
(A) had taken / had felt
(B) took / felt
(C) have taken / have felt
(D) had taken / have felt

*與「現在事實相反」的假設語氣

從屬子句　　　                  主要子句

if+主詞+   were…..，            主詞+  would/should   +原形V

          過去式動詞….，              could/might

例句：

 1.假如我是你，我會說實話。If I were you,I would tellthe truth.

 2.假如他有錢，他就能買它了。 If he had money,he could buy it.

開竅要訣

在此句型中的「if子句」之動詞須用「過去式」,而be動詞不論人稱一律用were

*與「過去事實相反」的假設語氣

從屬子句　　　                  主要子句

if+主詞+had+P.P….,              主詞+  would/should/could/might   +have+P.P

例句： 

1.假如當時我有足夠的時間，我會和你去。

 If I had had enough time, I would have gone with you.

2.假如他當時沒把錢丟掉，他就能買腳踏車了。

If he hadn’t lost the money, he could have bought a bicycle.

If you had taken medicine this morning, you might have felt better. 

(A) had taken過去PP  / had felt 過去PP →have felt現在pp

(B) took過去 / felt過去 →feel現在

(C) have taken現在PP →had taken過去PP/ have felt現在PP

(D) had taken過去PP / have felt 現在PP

(1)    與現在相反：(如果S過去….，S現在就…)

If + S + 過去V ,  S + (would / might / could) + 原V

If I won the first prize, I would give it to my best friend.

如果我(那時候)得到第一名，我(現在)就會把它給我最好的朋友

(2)    與過去相反：(如果S過去已經…..，S現在已經…)

If + S + had p.p. , S + (would / might / could) + have p.p.

If I had won the first prize, I would have given it to my best friend.

如果我(那時候已經)得到第一名，我(現在已經) 就會把它給我最好的朋友

與現在事實相反用過去式

與過去事實相反用過去完成式