What is Taiwanese for and you be my

There isn't a direct translation of "and you be my..." in Taiwanese, as it depends on the context.

Here are some ways you could express it, depending on the situation:

1. For actions/roles:

* 你做我的... (ní tso wǒ de...) - "You do/be my..."

* Example: 你做我的助手 (ní tso wǒ de zhùshǒu) - "You be my assistant."

2. For possession/belonging:

* 你當我的... (nǐ dāng wǒ de...) - "You be my..."

* Example: 你當我的朋友 (nǐ dāng wǒ de péngyou) - "You be my friend."

3. For emotional connection:

* 你做我的... (ní tso wǒ de...) - "You be my..."

* Example: 你做我的愛人 (ní tso wǒ de àirén) - "You be my lover."

4. For requesting assistance:

* 你幫我... (nǐ bāng wǒ...) - "You help me..."

* Example: 你幫我拿一下這個 (nǐ bāng wǒ ná yīxià zhè ge) - "You help me take this."

It's important to consider the specific context and desired meaning to choose the most appropriate translation.