Create a derived class inherited from the predefined grammar class.

创建一个从预定义grammar类继承而来的派生类。

youdao

The result is still an AST, but the parent class does most of the work for you. My grammar class looks like this

结果还是 AST，但父类会为您执行大部分工作。

youdao

She surprised everyone when she excused me from her grammar class, saying my time would be spent more productively writing in the library.

她免除了我的语法课，说我利用这个时间在图书馆写作会比上她的课更有成效，这决定让所有人都感到震惊。

youdao

In the 70s, I may have occasionally put gel upon my hair, smeared mascara upon my eyes and arranged a sneer upon my lip, but I was really a middle-class grammar school boy masquerading as part-time punk.

BBC: Should we despair at the kids of today?

And he said a "shockingly low" number of children from poor backgrounds were getting into grammar schools, while middle class children were being coached to pass the exam.

BBC: NEWS | UK | UK Politics | Tories 'out of touch' on grammars

David Willetts, the universities minister, argues that grammar schools entrench privilege because middle-class parents now prepare their children so well for the entrance exams that clever children who have not been coached do not pass.

ECONOMIST: Grammar schools