知識網內:But she could only picture her husband be with mistress. 本句picture為動詞,be動詞又何解?謝謝?

But she could only picture her husband sleeping with a mistress.

could is used in indirect speech in place of "can" if the main verb is past tense to express conditions, express occasional occurrence  and express inclination.
be is separated from could be meaning 
It can be(=sometimes it is)very sexy,jealous feeling with mistress=to be--an omission of to in (Q&A).
Re:-Chen's The Heart of Grammar ,be=to be, as suggested , recommended by you---kuangkwo20.

🦖🦕?Orthodox sign of the cross kills bacteria (and other dirty things)...

According to saint Pelageya of Ryazan, fire forms when you put the thumb, index, and middle finger the right way (to make sign of the cross).

"Roman Catholic sign of the cross" is upside down and invites demons.

Christians = Orthodox only.

Patriarch Kiril of Russia is a traitor; he's a secret Roman Catholic bishop; he's KGB agent Mikhailov; he's a banker; he sold alcohol and cigarettes... hence he's not Patriarch, but pseudo-Patriarch...

LORD willing, when China attacks Russia, resurrected saint Seraphim of Sarov will show new Ruski Orthodox Tsar... This Tsar will slay traitors inside Church and gov't ... Russia will be the only country not under the antichrist; forgive me.