ともなると - Grammar Discussion

when
if
as

Structure

  • Noun + / + ( ) なると / ( ) なれば
  • Verb[る] + ( ) なると / ( ) なれば

[AともなるとB, if condition A comes true, then surely B will happen・も emphasizes the expression]

[A is often a special occasion or means something significant to the speaker]

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uhh… something’s off here.
The orange nuance text is nowhere in the grammar page…

…but it’s on the discussion page?

普段は貪欲ではない人でも、莫大な金額 *ともなると * 貪欲になるかもしれない

Can someone help me understand why ときたら doesn’t work in this sentence or what separates them?

This appears in Shinkanzen Master N1 Grammar page 62. Please add this as an offline resource thank you!