What goes after 'let alone'?

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello everyone,
Please look at the two sentences below:

  1. Keeper Judge never touched him let alone trip him.

  2. Many thousands of children had never even seen, let alone owned a pair of shoes.
    I wonder why it is ‘trip’ in the first sentence but ‘owned’ in the second one, maybe in the second one, there is a ‘had’ before ‘seen’ and ‘owned’ (owned is past participle).But why in the first sentence, ‘trip’ is in infinitive form while ‘touched’ is a verb ?
    Please explain it for me. Thank you very much !

2

.
‘Trip’ is wrong in the first sentence; it should read ‘tripped’.
.

3

Hi Duc

I think ‘trip’ might work in your first sentence with this wording:

1a. Keeper Judge didn’t touch him let alone trip him.

Maybe MM will chime in with his opinion on this.
.

4

.
Yes, of course-- the tenses must be the same.
.