1) You don't necessarily have to go.
你不一定要去。
2) You don't necessarily have to attend.
你不一定要出席。
3) it may be a good idea not to pick it up.
你最好不要去捡。
4) You must measure accurately.
你一定要量准。
5) You must come back.
你一定要回来哦!
6) Shall we go?
要不要去？
补充资料：要不
1.犹否则。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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