没有if开头的祈使句。If anyone calls， just say I'll be back in the office at four o'clock.
如果有人给我打电话 请告诉他们我4点钟回办公室。
I'll help you if you're stuck.
你要是难住了，我来帮你。
If anyone's to blame， it's me.
如果有人该承担责任，那就是我。
What if this doesn't work out?
如果这行不通怎么办呢
You can stay here if you like.
如果你愿意的话，你可以呆在这里。
She was a good， if messy， cook.
尽管有点邋遢，她还是一名好厨师。
