Давид не знал, что его матушка вышл

Давид не знал, что его матушка вышла замуж за мистера Мердстона. Если бы он знал об этом, он не возвращался бы домой в таком хорошем настроении.

Results (English) 1:

David knew that his mother was married to Mr Merdstona. If he knew about it, he would not return home in such a good mood.

Results (English) 2:

David did not know that his mother married Mr. Merdstona. If he knew about it, he would not return home in such a good mood.

Results (English) 3:

David did not know that his mother was married for the umpteenth time placard. If he knew about this, he has not returned to his home in such a good mood.