300000用英语怎么读

300,000 in English is pronounced as "three hundred thousand".

There are no special rules for pronouncing numbers in English. The way you spell a number is usually the same way you say it. However, when reading or writing large numbers, it can be helpful to know how to pronounce them correctly. For example, one million is spelled and pronounced as "one million", but three million is spelled and pronounced as "three million".

I hope that helps! Let me know if you have any other questions.