�。ㄕ`）I shouldn't do that if I was you.

　　（正）I shouldn't do that if I were you.（表示與現(xiàn)在事實(shí)相反的虛擬語氣不能用was，必須were.）

　　2.中文：要是我父親現(xiàn)在在這里，他會(huì)告訴我該做什么。

　�。ㄕ`）If my father were here now， he will tell me what to do.

　�。ㄕ�）If my father were here now， he would tell me what to do.（表示與現(xiàn)在事實(shí)相反的虛擬語氣中，主句的助動(dòng)詞只能用would，might等過去時(shí)。）

　　3.中文：要是我知道她的電話號(hào)碼，我就會(huì)給她打電話了。

　�。ㄕ`）If I knew her telephone number， I would have called her.

　�。ㄕ�）If I had known her telephone number， I would have called her.（表示與過去事實(shí)相反的虛擬語氣中，條件從句的動(dòng)詞要用過去完成時(shí)。）

　　4.中文：要是昨天沒下雨她也許會(huì)來。

　�。ㄕ`）If it had not rained yesterday， he might come.

　�。ㄕ�）If it had not rained yesterday， he might have come.（表示與過去事實(shí)相反的虛擬語氣中，主句的動(dòng)詞要用助動(dòng)詞的過去時(shí)might，could等＋HAVE＋過去分詞。）

　　5.中文：我不認(rèn)為我會(huì)失敗，但要是我失敗了，我會(huì)再努力。

　�。ㄕ`）I don't think that I shall fail. But if I failed， I would try again.

　�。ㄕ�）I don't think that I shall fail. But if I should fail， I would try again.（表示與將來事實(shí)相反的虛擬語氣中，條件從句的動(dòng)詞用should加原形動(dòng)詞。）

　　6.中文：他要是帶了錢就會(huì)買它。

　　（誤）Did he bring some money with him， he would have bought it.

　�。ㄕ�）Had he brought some money with him， he would have bought it.（表示與過去事實(shí)相反的虛擬語氣中，條件從句的動(dòng)詞要用過去完成時(shí)，若省略if，則用倒裝形式。）

　　7.中文：她要是個(gè)男人可能會(huì)當(dāng)選總統(tǒng)。

　　（誤）Be she a man， she might be elected president.

　　（正）Were she a man， she might be elected president.（表示與現(xiàn)在事實(shí)相反的虛擬語氣，不能用was，只能用were；若省略if，則將were放在句首。）

　　8.中文：我提議提高教師的薪資。

　　（誤）I suggested that the teachers' wages could be increased.

　�。ㄕ�）I suggested that the teachers' wages should be increased.（suggest當(dāng)建議講時(shí)，后面的名詞從句的主要?jiǎng)釉~要用should加原形動(dòng)詞，should可以省略。）