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