qǐng gěi wǒ…
Please give me…
可以帮我一下吗?
Can you help me?
可以 (kěyǐ) means 'can', 帮 (bāng) means 'help', 我 (wǒ) is 'me', 一下 (yíxià) means 'a bit' or 'for a moment', and 吗 (ma) turns it into a question. The structure is: Can + help + me + a bit + ?
能帮我吗?
néng bāng wǒ ma?
Can you help me? — More colloquial, using 能 (néng) instead of 可以 (kěyǐ).
请帮我一下。
qǐng bāng wǒ yíxià.
Please help me. — More polite, adding 请 (qǐng) at the beginning.
你好,可以帮我一下吗?
nǐ hǎo, kěyǐ bāng wǒ yíxià ma?
Hello, can you help me?
当然可以!
dāngrán kěyǐ!
Of course!
Appropriate
Avoid when
You can say 可以帮我一下吗? (kěyǐ bāng wǒ yíxià ma?). It is a polite and common way to ask for help.
It is pronounced as kěyǐ bāng wǒ yíxià ma? Note that 一 (yí) changes tone before 下 (xià).
Tomyo
Remember 可以帮我一下吗? and hundreds of other phrases with smart reviews, audio and examples.