Is HTML5 supporting WordPress plugins? (HTML5是否支持WordPress插件？)
HTML5 is a version of the HypterText Markup Language, WordPress is a server-side CMS. (HTML5是HypterText标记语言的版本，WordPress是服务器端CMS。) HTML5 is not aware of WordPress or the server-side technologies, not even of PHP. (HTML5不了解WordPress或服务器端技术，甚至不了解PHP。) Your PHP server-side code does some stuff and generates a structure that will be sent to the browser to be displayed. (您的PHP服务器端代码会做一些事情，并生成一个结构，该结构将发送到浏览器以显示。) It is a matter of browser whether it's supporting or not HTML5 and on the server-side HTML5 support only means whether the PHP code that runs generates some HTML5 tags as well, or generates HTML4 tags only. (与浏览器是否支持HTML5有关，而在服务器端支持HTML5仅表示运行的PHP代码是否也生成某些HTML5标签，或仅生成HTML4标签。) So, all due respect, this question doesn't make sense. (因此，所有应有的尊重，这个问题没有道理。)
WordPress is a CMS which has some plugins which generate HTML structure. (WordPress是一个CMS，其中包含一些可生成HTML结构的插件。) Whether or not they generate HTML5 tags as well depends on the plugin. (它们是否也生成HTML5标签取决于插件。) However, even if your plugins will not generate HTML5, nothing stops you to generate HTML5 tags into your structures. (但是，即使您的插件不会生成HTML5，也不会阻止您将HTML5标签生成到您的结构中。)
So you can use WordPress and its plugins to work out your website and create your own functionalities if the plugins do not provide exactly what you want. (因此，如果插件无法提供所需的功能，则可以使用WordPress及其插件来创建网站并创建自己的功能。)
How to install WordPress plugins? (如何安装WordPress插件？)
Read about this in articles already written, there is no point to describe what already has been described. (在已经写过的文章中阅读有关此内容的内容，没有必要描述已经描述的内容。) Please see this for example: https://www.siteground.com/tutorials/wordpress/install-plugins/ (请参见以下示例： https : //www.siteground.com/tutorials/wordpress/install-plugins/)
What is the alternative? (有什么选择？)
Many many things. (很多很多的东西。) You can use another PHP CMS like Drupal, or you can use frameworks, like Symfony or Laravel, but you can choose to avoid using any frameworks or CMS technologies. (您可以使用其他PHP CMS（例如Drupal），也可以使用框架（例如Symfony或Laravel），但可以选择避免使用任何框架或CMS技术。) And this is only on PHP. (这仅在PHP上。) There are many other server-side technologies to choose from as well, like JSP, ASP.NET, NodeJS, etc. (还有许多其他服务器端技术可供选择，例如JSP，ASP.NET，NodeJS等。)
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