1. Baici Zhan \x0d\ has a computer version, as well as ios and Android mobile versions. \x0d\Choose words at different levels according to your own level, then consider how many you can memorize every day, make a plan, and the system will allocate the words by itself. \x0d\The special feature is to make the words less boring. There are four pictures under each word, one of which vividly expresses the meaning of the word. After memorizing each day's tasks, the system will automatically select the ones where you make more mistakes and review them repeatedly. There are phonetic symbols, explanations and tips, which is super easy to use. \x0d\2. Scallop\x0d\ Scallop is also very easy to use. There are computer versions, IOS and Android mobile versions. \x0d\ Different levels can have different materials, including listening, speaking, reading and writing. Scallop words, scallop sentences, scallop reading, scallop news, there is always something you like. \x0d\3. Hujiang English\x0d\ also has computer and mobile versions. This is the most comprehensive place to find information for self-study English. It covers not only English but also various languages. As long as you are interested, you don’t have to worry about not being able to learn it. You can also use Shanghai coins here, which can be exchanged for some information that requires money. Words, sentences, there is nothing you can't find, only things you can't think of.