1. ~とおり / ~どおり (Exactly like / Just as...)
N の + とおり [だ/に]
N + どおり [だ/に]
Expresses doing something or something occurring in accordance with the content, manner, prediction, plan, etc. stated before it. Depending on context, it means “as...”, “according to...”, or “just as...”. It does not always mean a 100% identical copy.
2. ~によって / ~による (Depending on / Due to / By...)
~によって / ~による has several uses:
① Depending on / according to: a result or situation varies with N. ~によっては = depending on N, in some cases...
② Cause/reason: “due to / because of”, often objective and written in tone.
③ Agent in a passive sentence: “by”. This is especially common with verbs of invention, discovery, creation, construction, etc., but is not limited only to “creative verbs”.
④ Depending on context, によって can also indicate means/method: “by / through / by means of”.
3. ~たびに (Every time / Whenever...)
Whenever a certain action or event occurs, another specific event always accompanies it. The following clause can express intentional or unintentional actions.
4. ~ば~ほど / ~ほど (The more... the more...)
Aい ければ + Aい + ほど
Aな なら(ば) + Aな + ほど
Aい / Aな / N + ほど (Shortened form)
Expresses a proportional change: "The more ... the more ..."
5. ~ついでに (While at it / On the occasion of...)
N の + ついでに
While having the occasion to do one main action, another secondary action is done at the same opportunity: “while you are at it / on the occasion of...”.
✓ The first action is usually the main purpose or occasion, and the second is an additional action.
✓ The two actions are often performed by the same person, but “same subject” is not an absolute grammatical rule; the key is that the second action takes advantage of the opportunity created by the first.