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