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