兼 (đồng thời đảm nhiệm / song hành)

One person holds two roles

• A school biography describes a teacher who is also a writer.
• she / her她tāis是shìteacher老师lǎo shīand also兼jiānwriter作家zuò jiā。 — One person holds both roles at the same time.

Locate the pattern in real examples

• and also兼jiān (doubling as / concurrently): he他tāis是shìteacher老师lǎo shīand also兼jiānteacher in charge of a class班主任bān zhǔ rèn。; she / her她tāis是shìsinger歌手gē shǒuand also兼jiānactor or actress演员yǎn yuán。
• Read the whole clause before choosing a translation. The examples show the pattern in use; the context below determines what the speaker claims.

Follow the speaker

he他tāis是shìteacher老师lǎo shīand also兼jiānwriter作家zuò jiā。

• In the opening situation: she / her她tāis是shìteacher老师lǎo shīand also兼jiānwriter作家zuò jiā。
• One person holds both roles at the same time.

Check the limit of the explanation

• Place and also兼jiān between the roles in Aand also兼jiānB.
• This differs from she / her她tābefore以前yǐ qiánis是shìteacher老师lǎo shī，now现在xiàn zàiis是shìwriter作家zuò jiā, which describes a change of role rather than concurrent roles.

Repair the form before interpreting it

• The form she / her她tāis是shìand also兼jiānteacher老师lǎo shīwriter作家zuò jiā needs repair here. Write she / her她tāis是shìteacher老师lǎo shīand also兼jiānwriter作家zuò jiā instead; keep the word or frame in its demonstrated order.
• Form and meaning are separate checks. After the repair, explain the sentence in its situation rather than treating a familiar translation as a universal rule.

Keep the distinction

Read the full reference: HSK 6 grammar — Sentence patterns.