にしても～にしても・
Take either case: it comes to the same. All three say exactly this. にしても is the everyday one, にしろ sounds firmer, and にせよ is mostly written.
everyday
Whether you are coming or not, please let us know by Friday.
firmer
Whether you are coming or not, please let us know by Friday.
written
Whether you are coming or not, please let us know by Friday.
How to form it
A にしても + B にしても
The same with にしろ and にせよ, and the same ending on both halves. A and B are nouns or plain forms, with no だ: 電車にしても, 行くにしても, 高いにしても.
- A and B
- Opposites (行く and 行かない, 賛成 and 反対), or two of a kind (電車 and バス).
- After it
- What holds in both cases, mostly your own view of it: an opinion, advice, a request.
- Where you'll meet it
- にしても in conversation and writing alike. にしろ in writing and formal speech, and in everyday talk when someone is being firm. にせよ mostly in writing. Both in exam reading.
In use
Whether you are going or not, give them your answer early, OK?
Whether you buy or rent, you should compare the costs first.
Joke or not, that is a rude way to put it.
Whether you are for it or against it, you must state your reasons clearly.
どちらにしても: either way
Once the two cases have been named, people sum them up with どちらにしても, casually どっちにしても or どっちにしろ: "either way". Here にしろ is plain everyday talk. In writing it is いずれにせよ.
Either way, it won't be finished today.
Close neighbours
ても～なくてもN3
Do it or don't, and what follows is the same: a fee, a rule, a plan. にしても often comes before the choice is made, and says what to do first.
With the fixed-rate plan, the fee is the same whether you watch the videos or not.
か～かN5
The "whether A or B" of something not yet known or decided, with 分かる, 決める or 聞く after it.
I have not decided yet whether to go by train or by bus.
Used once, it is "even if": one case is granted, and something still holds.
Even if it is only a day trip, we need to leave by six in the morning.
Check yourself
1The same word goes in both blanks.
留学する
Choose an answer to see why.
2Which ending fits?
電車で
Choose an answer to see why.
More sentences
Train or bus, there is no escaping the morning crowds.
Whether you go alone or with a friend, you need to book in advance.
Whether the result is good or bad, let's check the facts first.
Whether you come yourself or send someone in your place, identification must be shown.