The correct answer for is A.
Translation:
Wǒ míngtiān bānjiā, nǐ yǒukòng ma?
Jack：我明天搬家，你有空吗？
I’m moving to the suburbs tomorrow, are you free?
Yǒukòng, wǒ qù bāng nǐ ba.
Tony：有空， 我去帮你吧。
I’m free. I’ll go help you out.
Explanation:
Both 帮 (bāng) and 帮忙 (bāngmáng) have to do with help, but they differ in the following ways:
1. 帮忙
(bāngmáng)
a. Used as a noun.
Wǒ xūyào nǐ de bāngmáng.
我需要你的帮忙。
Wǒ xūyào nǐ de bāngmáng.
我需要你的帮忙。
I need your help.
b. Used as a verb. When the word 帮忙 (bāngmáng) is used as a verb, the structure is: 帮忙 (bāngmáng) + V + Object.
Qǐng bāngmáng jiějué yíge wèntí.
请帮忙解决一个问题。
Qǐng bāngmáng jiějué yíge wèntí.
请帮忙解决一个问题。
Please help me solve the problem.
Note:
解决(jiějué) is the verb and 一个问题 (yíge wèntí) is the object.
Guòlái! Bāngmáng bān jiājù.
过来！帮忙搬家具。
Come here! Help move the furniture.
Note:
搬 (bān) is the verb and 家具 (jiājù) is the object.
c. Used as a verb 帮 (bāng, help) and noun 忙 (máng,favor). Place words between 帮 (bāng) and 忙 (máng), such as the measure word 个 (gè). 帮个忙 (bāng ge máng), meaning “to do somebody a favor.”
Wǒ qǐng nǐ bāng ge máng.
我请你帮个忙。
我请你帮个忙。
I would like you to lend me a hand.
2. 帮(bāng)
It can only be used as verb when meaning “help” with the structure of 帮 (bāng) + sb + do something.
It can only be used as verb when meaning “help” with the structure of 帮 (bāng) + sb + do something.
In some oral situations, the direct object might be omitted.
Within the earlier dialogue, Tony expresses, “我去帮你吧 (Wǒ qù bāng nǐ ba).” Notably, the object is omitted in this particular sentence.
Examples:
Qǐng bāng wǒ xiě yìfēng xìn.
请帮我写一封信。
Please help me write a letter.
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