grammar → 再加上
TSUMUGU · TBCL 4 (est.) · 語法
再加上 grammar point · tier 1 · additive 再加上 (on top of that, plus)
Adds a second supporting factor on top of one already stated; the stack of both produces the result.

字源 FORM what the parts do

再 raises the count one more time; 加 piles the next thing on top; 上 fixes it onto what is already there. Together they lay a second factor over the first.

故事 STORY a scene to remember it by

One reason sits on the table, and a second is laid on top of it; the two pressed together push the result through.
字源記憶法
框 · Frame
[fact 1],再加上 [fact 2],(所以) [result]。
觸 · Trigger
One reason is already given; a second reason stacks on it and the two together carry the outcome.
序 · The move
1State the first factor as a settled clause.Is factor 1 already a reason on its own?
2Open with 再加上 and name the second factor.Does factor 2 push the SAME direction as factor 1, not against it?
3Close with the outcome the two factors jointly reach, often with 所以.Does the result depend on both stacked, not just the second?
例 · Examples
1哥哥現在工作穩定job is stable再加上on top of that, plus之前存的錢the money saved earlier所以so, therefore日子過得還不錯life is going pretty well
My older brother has a steady job now, and on top of that the money he saved earlier, so life is going pretty well.
界 · Boundary
而且
而且 just adds another clause of any kind; 再加上 stacks a second contributing factor that feeds the same result.
因為…所以…
因為…所以… gives one cause for the effect; 再加上 layers an EXTRA cause onto a cause already given, then the result follows.
✗ 他很有錢,再加上他很小氣,所以沒人喜歡他。(stacks a contrasting trait) → ✓ use 而且/可是; 再加上 needs factor 2 to push the same way as factor 1.
✗ 再加上下雨,比賽取消了。(no factor 1 on the table first) → ✓ 場地有問題,再加上下雨,比賽取消了。
✗ 我很累,再加上。(left dangling) → ✓ 我很累,再加上明天還要上班,今天早點睡。
English 'plus / on top of that' can open a sentence cold; 再加上 needs a first factor already stated for the second to stack onto.