“on earth”是一个英语词组,它的意思是“究竟;到底;全然;到底;全地球;全世界”。这个短语在英语中很常见,经常用于表达惊讶、疑惑或者强调。
读音上,“on earth”通常被读作:[ˌɔn ˌθəust]。
在用法上,“on earth”可以用于各种句子结构中,例如:在疑问句中作为副词短语,在陈述句中作为状语。它也可以用于强调某事的重要性或严重性。
例句:
1. What on earth is happening? (发生什么事了?) 2. I don't know, she won't tell me, on earth what's going on? (我不知道,她不告诉我,到底发生了什么?) 3. On earth, why didn't you tell me? (究竟为什么你不告诉我?) 4. On earth, you look so happy! (你看起来非常开心啊!) 5. I don't know, on earth, where he is. (我不知道,他到底在哪里?) 6. On earth, what's so important about that? (那件事有什么重要的呢?) 7. On earth, could it be true? (这是真的吗?) 8. On earth, what was your mother thinking when she named you? (你妈妈给你取这个名字的时候在想什么?) 9. On earth, how did you manage to do that? (你是怎么做到的?) 10. On earth, what could have happened? (究竟发生了什么?)
总的来说,“on earth”是一个非常有用的英语词组,它能够表达出各种不同的情感和意思,非常适合用于日常交流和写作中。