Even though

"Even though"用在事实前与"but"用法相近，如:

"I want to travel to China, but I cannot because of COVID travel restrictions.”

也可以说:

“Even though I want to visit China, I cannot because of the pandemic.”

比较"even though"与"despite the fact that."的表达:

"Despite the fact that snow fell on Monday, our schools opened.

Our schools opened Monday even though there was snow."

这两个句子周一下雪是事实，尽管常常下雪是关闭的，但今天没关。

Even if

语法专家Betty Azar说“Even if”与"whether or not."意义相近。Even if告诉我们在某些条件下是没关系的。如

“I will take the dog for a walk even if it is raining.

Whether or not it is raining, I will take the dog for a walk.”

这两个表达，雨是可能下的，但也可能不发生。

有时候你会发现"even if"描述的不是真实情形。如:

“Even if I could travel to Mars, I would not go there.

I cannot attend the party, even if you could change the time.”

讲话者的意思是任何情形下他不可能去火星或参加聚会。

"Even though" comes before a statement of fact. It has a similar use to the word "but." Here are examples about travel to your country:

I want to travel to China, but I cannot because of COVID travel restrictions.

Now, see how you can say the same thing with the expression "even though:"

Even though I want to visit China, I cannot because of the pandemic.

Compare these statements with even though and the expression "despite the fact that."

Despite the fact that snow fell on Monday, our schools opened.

Our schools opened Monday even though there was snow.

In both statements, it is true that snow fell Monday and although our schools often close due to snow, they did not on this day.

Even if

Grammar expert Betty Azar says that statements with "even if" are similar to ones with "whether or not." "Even if" tells us that there is a certain condition that does not matter. Compare these examples.

I will take the dog for a walk even if it is raining.

Whether or not it is raining, I will take the dog for a walk.

For both statements, the rain is possible, but may not happen.

You will sometimes find that "even if" describes an unreal situation.

Even if I could travel to Mars, I would not go there.

I cannot attend the party, even if you could change the time.

In these examples, it is impossible to travel to Mars and the time of the party cannot be changed. However, the speakers say that in any case, they are not interested in traveling to Mars and are not able to attend the party.

I hope this helps you understand the difference between "even if" and "even though,"