What if I lost my key? I'm afraid I'm sometime very forgetful .

如果我丢失了钥匙，那该怎么办? 恐怕我有时是很健忘的。

For example, if I lost my keys, then I will ask my girlfriend to find them.

例如，如果我丢了钥匙，我会请我的女朋友帮我找。

So, I wouldn't face the situation that I was locked out because I lost my keys.

所以，我不会面临因为丢失钥匙而被锁在门外的情况。

I actually thought I lost my key the other day and nearly had a conniption fit so yeah.

有一天我认为我的钥匙丢了，我差点就要大发脾气了。

We missed the first ten minutes. - I lost my car keys and it took a while to find them.

我们错过了前十分钟。 - 我把车钥匙丢了，找了好久才找到。

One person had it that I lost my key to the apartment I was sharing, and was found lying unconscious outside the door.

有人说，我弄丢了和别人合住的公寓房门钥匙，被人发现时已昏倒在门外。

When I lost my keys, we had to change all the locks.

【change】我丢了钥匙之后，我们只好把所有的锁都换了。

In American English the following is also possible: I lost my key.

在美式英语中，以下情况也是可能的：我丢了钥匙。

So, for example: " I lost my keys. Can we split up and look for them? " Like look for them together.

所以，例如：“我丢了钥匙。 我们可以分头去找吗？ ” 比如一起找。

Maybe I'm saying it to a family member, maybe a friend but I want to say to them, " I lost my keys" .

也许我是对家人说的， 也许是对朋友说的， 但我想对他们说，“我丢了钥匙” 。