1. 在app.module.ts中，将Forms/ReactiveForms模块添加到imports中：

import { FormsModule, ReactiveFormsModule } from '@angular/forms';

@NgModule({
  imports: [
    // other imports
    FormsModule,
    ReactiveFormsModule
  ],
  // other code
})

2. 将Forms/ReactiveForms模块添加到路由模块的loadChildren中：

const routes: Routes = [
  // other routes
  { path: 'lazy', loadChildren: () => import('./lazy/lazy.module').then(m => m.LazyModule), data: { preload: true, delay: 5000 } }
];
@NgModule({
  imports: [RouterModule.forRoot(routes, { preloadingStrategy: PreloadAllModules })],
  exports: [RouterModule]
})
export class AppRoutingModule { }

将上面的代码中的./lazy/lazy.module修改为Forms/ReactiveForms路径即可。