12'

17'

I'd forget my head if it weren't screw on.

我真的非常健忘。

29'

💡字面上是说一个人若没把头拴好（screw on) ,就会把它给忘记了，来形容人常忘东忘西的情况。要注意的是这是用来比喻的假想情景，要用与现在事实相反的虚拟语气（主句用would+动词原形；if从句用过去式动词）来表现。

32'

📌I can't believe I forgot my keys again.I think I'd forget my head if it weren't screwed on.

真不敢相信我又忘了带钥匙，我实在非常健忘。

21'

6'