Yes, Turnoi. You can. You are wrong. Again.

For example- I have seldom seen such stupidity - Now with emphasis with inversion - Seldom have I seen such stupidity.

Again, emphasis with inversion comes up at CAE(C1) level, so I wouldn't expect you to know about it, although you probably should if you really do teach advanced English as you claim.

And TPR is not sub standard teaching, it is a highly effective and globally used (including in state schools) method of language acquisition for YL students and beginner level adults.