以…為…grammar point · tier 2 · 以 X 為 Y — take X as Y / regard X as Y / treat X as one's Y (formal)
Pick up a thing or means with 以 (X), then cap it with 為 + a noun (Y) that names the role X is made to serve: take X as Y, regard X as Y, use X as Y — formal written register.
字源 FORM what the parts do
以 is grammar's quiet tool, with, by means of, grown from the verb 'to use'; it takes the thing up and hands it on. 為 is a hand (爫) leading an elephant (象) by the trunk, the great animal put to work, the graph for to make into. Read wéi here, the making-into fixes a role. What 以 picks up is the thing; what 為 caps it with is the role that thing is now made to serve.
故事 STORY a scene to remember it by
以 lifts a plain stone into a hand; 為 sets it down wearing a crown. What goes in through 以 is the bare thing; what comes out after 為 is the rank it now stands in. Lift the crown and crown the stone, and nothing is left to wear it.
字源記憶法
框 · Frame
[subj] 以 [X: the thing or means taken up] 為 [Y: the role / status it is made to serve (noun)]
觸 · Trigger
You state that a known thing or means counts as, serves as, or is treated as a certain role, status, or standard — and want to lay out both the thing and the role in formal register.
序 · The move
1Name the actor, then 以 + the thing or means being put forward (X).Is X the bare thing being taken up, not the role it ends in?
2Cap X with 為 + a noun naming the role it is made to serve (Y).Is the word after 為 a role / status / standard noun (目標, 中心, 主, 榮), not a quality word like 乾淨?
3Confirm the direction: the thing rides in after 以, the role it serves rides in after 為.Run it forward — thing → role it serves as. Swap X and Y; would it still mean what you meant?
例 · Examples
1他以takes up — what follows is the thing put forward取得律師資格obtaining lawyer qualification — the thing taken up (X)為made to be; what follows is the role X is set as目標goal — the role the thing is now made to serve (Y)。
He takes obtaining lawyer qualification as his goal.
界 · Boundary
把…V為…
把…V為… fronts a definite object and an actor physically designates it through a verb (定為, 列為, 稱為): someone names X as Y in one act. 以…為… puts a thing or means forward with 以 and states the standing role it serves (以X為主, 以…為目標), no designating verb between — X simply counts as Y. One assigns a name to a thing; this one frames a thing as a role.
是…的 foregrounds one detail (time, place, agent) of a known past event. 以…為… takes a thing up and frames it as a role or standard; the slot between 以 and 為 holds the thing, not a stressed circumstance. One spotlights a detail of what happened; this one sets what a thing serves as.
是 states a flat equation as fact (目標是律師資格). 以…為… frames it as a standing stance someone holds: the thing is taken up (以) and made to serve a role (為), an adopted standard rather than a bare identity. One says X equals Y; this one says X is held as Y.
他取得律師資格為目標。 → 他以取得律師資格為目標。 (以 must open to take the thing up before 為 names the role)
他以取得律師資格目標。 → 他以取得律師資格為目標。 (為 must cap the role; without it the noun has nothing fixing it as the role)
他以目標為取得律師資格。 (when you meant the qualification is the goal) → 他以取得律師資格為目標。 (the thing rides after 以, the role after 為 — direction is fixed)
English 'take/regard/use X as Y' carries thing and role inside one verb plus 'as', so learners drop 以 or 為, or treat the order loosely and place the role where the thing belongs. The split frame (以 opens for the thing, 為 caps the role) has no single-word English mirror.