Regarding the pronunciation of 為 -- how do I know when it goes up and when it goes down?
為什麼 is W
以為=thought 成為=become wei2
為=for wei4 為什麼 for what, 為了 for someone/something， 為此 for this
above is what I learned., there is one another, for help someone do thing
為人服務, 為國爭光 4
情況
1. 原因（因為….）2. 為什麼（為何）3. 替、幫人 (為你而做）的為4, 為什麼 4, 為了 4, 為此 4 is that correct?
I always pronounce tone 4., Excellent:),“For” something or someone is/are 4
Others are 2
Above you’ve mentioned are all the meaning of for, so it’s 4
For what?
You all are being called for this
For him,
yes.
“Becoming” and like “being” a teacher
Both 2
為=for wei4 為什麼 for what, 為了 for someone/something， 為此 for this
above is what I learned., there is one another, for help someone do thing
為人服務, 為國爭光 4
情況
1. 原因（因為….）2. 為什麼（為何）3. 替、幫人 (為你而做）的為4, 為什麼 4, 為了 4, 為此 4 is that correct?
I always pronounce tone 4., Excellent:),“For” something or someone is/are 4
Others are 2
Above you’ve mentioned are all the meaning of for, so it’s 4
For what?
You all are being called for this
For him,
yes.
“Becoming” and like “being” a teacher
Both 2
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