English問題

這兩句都是屬於假設法過去式，但
if I were to...是表示：與未來之事實相反的假設，如：
If I were to go abroad, I would go to England.（如果我要去外國，我要去英國。但事實上說話者覺得將來不可能去外國）
而
If I had ...是表示：與現在事實相反的想像，如：
If I had money enough, I could buy the house.（假如我有足夠的錢，我就能買這房子：事實上現在我沒有夠的錢）
所以：If I had a dog, I would(若我有隻狗，我就會．．．：現在根本沒有狗）
而If I were to have a dog, I would...(要是我會有隻狗，我就會．．．：說話者根本不打算，或想不可能有隻狗）
希望幫到你！

2008-01-24 22:52:48 補充：
我們也可以這樣了解 If someone were to...，這句是用在條件句中，出於對未來的假設想像。好像：Even if England were to win the next two matches, Germany would still be three points ahead.（就算英格蘭連勝下兩場，德國仍領先三分：英格蘭連勝下兩場是對未來假設的想像）又如：If we were to offer you the job, would you take it?（要是我們會給你這份工作，你們上任嗎？：給你這份工作，是說話者對將來假設的想像）

If I were to ... 通常指在計劃中需要或應該要做的事. 而 If I had ... 則只是一般的"假如"句子.

兩個解釋唔同
"If I were to have a dog, I would..."
*如果我會有一隻狗，我會... ←但係你永遠都唔會有一隻狗, 只係幻想

"If I had a dog, I would..."
*如果我有一隻狗，我會... ←你有機會有一隻狗

只是意思唔同

"If I had a dog, I would..." 是一個被動式
"If I were to have a dog, I would..." 是一個主動句