1) No, you don't need to change.
不,你不必转车。
2) No, no need to change .
不,不必转车。
3) You needn't be alarmed.
你不必担忧。
4) You may spare yourself the trouble.
你不必费神。
5) Don't be meddling.
你不必多事。
6) You don't have to go now.
你不必去了。
参考词条