第三种类型条件句(Type III)
Type III是非真实条件句 (unreal conditional) 的一种 所谓“非真实条件”，在语义上包含着不同程度的“非真实性” 这种类型的条件句也可分为基本形式和变体形式。
1) 第三种类型条件句的基本形式
第三种类型条件句的基本形式是
(If) simple past/ were + (Main) would, etc+ inf
例如
[1] If we
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第三种类型条件句(Type III)
Type III是非真实条件句 (unreal conditional) 的一种 所谓“非真实条件”，在语义上包含着不同程度的“非真实性” 这种类型的条件句也可分为基本形式和变体形式。
1) 第三种类型条件句的基本形式
第三种类型条件句的基本形式是
(If) simple past/ were + (Main) would, etc+ inf
例如
[1] If we
caught the 10 o'clock
train, we would
(could, might,
etc) get there by
lunch-time.
[2] If I came into a fortune, I would give up working.如果我发了财，我就放弃工作。
[3] If I knew how it worked, I could tell you what to do.
这三个句子 ，在if分句中动词都用一般过去时，主句动词都用 would, could, might, etc +不定式。三个句子在语法形式上虽然相同，但由于出现在不同的语境和上下文中，其条件实现的可能性就有程度的差别。
l)
If I came into a fortune 显然是一种主观腮想，几乎不可能实现 if- 分句所表示的条件。根据上下文显然与现在事实相反，从而根本不可能告诉对方做些什么。下面再举数例。
If you asked me tomorrow, I would (或 should, 但以用 would 较为普通） be able to give you the
He would /
He would /
If Richard
这种句型的动词形式还可根据语义意图采用进行体形式。例如：
If we were on holiday now, we 'd be having a wonderful time.
If I were looking for a
2) 第三种类型条件句的变体形式
例如：
If our train were to arrive punctually, we should have time to visit you sister.
这个变体形式的动词搭配关系是：
(If) were to + inf+ (Main) would, etc + inf
要注意表示非真实条件的 were to 与表示“义务' (obligation) am /
If he were to get in touch with me, I could explain.
= Supposing he got in touch with me, .. . (非真实条件）
If he was to get in touch with me, why hasn't he done so?
= If the arrangement was that he should get in touch with me, why ... ? (表示“义务')
Type III 的另一个变体形式就是在 if- 分句中用 would+不定式， 表示不大可能实现的”意愿＂。例如：
If you'd cook the dinner,
这种非真实条件句与上一节讲到的 Type II 的第三种变体形式同形异义。在这里， would 表示一种不大可能实现的”意愿＂，而在 Type II 的第三种变体中， would 所表示的”意愿＂仅带婉转口气，并无不大可能实现之意。这种意义区别只有在一定上下文中才显示出来。
[2] If I came into a fortune, I would give up working.如果我发了财，我就放弃工作。
[3] If I knew how it worked, I could tell you what to do.
这三个句子 ，在if分句中动词都用一般过去时，主句动词都用 would, could, might, etc +不定式。三个句子在语法形式上虽然相同，但由于出现在不同的语境和上下文中，其条件实现的可能性就有程度的差别。
l)
If I came into a fortune 显然是一种主观腮想，几乎不可能实现 if- 分句所表示的条件。根据上下文显然与现在事实相反，从而根本不可能告诉对方做些什么。下面再举数例。
If you asked me tomorrow, I would (或 should, 但以用 would 较为普通） be able to give you the
He would /
He would /
If Richard
这种句型的动词形式还可根据语义意图采用进行体形式。例如：
If we were on holiday now, we 'd be having a wonderful time.
If I were looking for a
2) 第三种类型条件句的变体形式
例如：
If our train were to arrive punctually, we should have time to visit you sister.
这个变体形式的动词搭配关系是：
(If) were to + inf+ (Main) would, etc + inf
要注意表示非真实条件的 were to 与表示“义务' (obligation) am /
If he were to get in touch with me, I could explain.
= Supposing he got in touch with me, .. . (非真实条件）
If he was to get in touch with me, why hasn't he done so?
= If the arrangement was that he should get in touch with me, why ... ? (表示“义务')
Type III 的另一个变体形式就是在 if- 分句中用 would+不定式， 表示不大可能实现的”意愿＂。例如：
If you'd cook the dinner,
这种非真实条件句与上一节讲到的 Type II 的第三种变体形式同形异义。在这里， would 表示一种不大可能实现的”意愿＂，而在 Type II 的第三种变体中， would 所表示的”意愿＂仅带婉转口气，并无不大可能实现之意。这种意义区别只有在一定上下文中才显示出来。