"will" always with present tense sentence
Gerund functioning as a noun, possessive modifies Lionel doesn't hate Adam (him), but "his singing"
1st action always uses past perfect, 2nd uses simple past.
Future Perfect: something happening between present and unspecified future time.
Simple Past Tense
Gerund follows the preposition "for," infinitive does not.
"Would" with past tense
Noticed the dark-haired man, not specifically "standing."
Past participle instead of simple past
Simple past (date in past), not perfect present
Since and "for" require present perfect tense. "Would" should not be used with present tense.