When writing academic papers, we usually encounter the need to translate Chinese topics into English. At this time, it may involve the question of whether the first letter of each word in English questions needs to be capitalized or lowercase. Generally speaking, there are two ways to capitalize the first letter in English topics: one is to capitalize all the words in English topics, and the other is to capitalize only the first letter and some words in English topics.

The second way is more common. In some words, some letters refer to real words, but generally speaking, the first letter of function words needs to be lowercase, but it is not absolute. Below, we will analyze it in detail according to different scenarios.