If they made him dizzy why did he buy/has he bought/is he buying more?
那种药使他头晕。尽管如此,他还是又买了一些/又再买了一些/还要再买一些。
如果那些药使他头晕,那他为什么还买了/买/还准备再买?
I knew she was short of money.
If you knew she was short of money you should have lent her some./why didnt you lend her some?
我知道她缺钱。
如果你知道她缺钱,你应该借给她一些。/你为什么不借给她一些?
2 if从句的各种变化
有时不用if+一般过去时,而可以用下列各种时态:
(a)if+过去进行时
(Were going by air and)I hate flying.If we were going by boat Id feel much happier.
(我们准备乘飞机去而)我讨厌乘飞机。要是我们乘船去的话我会感到愉快得多。
If my car was working I would/could drive you to the station.
要不是我的车坏了,我会开车送你去车站的。
(b)if+过去完成时
If he had taken my advice he would have heen a rich man now.
如果他听了我的劝告,他现在会是一个有钱人了。
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2016-02-29
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