1, googledrive: This is a cloud storage service, which can securely store and * * share files, whether on a desktop, laptop, mobile phone or tablet. It also provides a real-time collaboration tool, which allows multiple people to edit the same document at the same time.

2.duolingo: This is a very popular online language learning platform, offering courses in many languages, including English, French and Spanish. The design is interesting and interactive, which can help improve language ability in a short time.

3.canva: This is an online design tool, which provides a large number of design templates, including social media pictures, posters, presentations and so on. Even without any design experience, you can easily create professional-level design works.

4. Grammar: This is an online grammar checking tool, which can help improve writing skills and avoid grammatical mistakes. It is suitable for all types of writing, including academic writing and business writing.

5.coursera: This is an online course platform, which provides courses for top universities and industry leaders in the world, covering various topics, including computer science, business, art and so on. You can choose appropriate courses to study according to your own interests and needs.

6.khanacademy: This is a non-profit online education institution, which provides a large number of free courses, covering mathematics, science, computer programming, history, art history and other fields, with the goal of changing people's lives through education.