Please turn these Chinese sentences in English ,will you

这个句子很明显是祈使句.turn ...into...:译为...
祈使句 Please turn these Chinese sentences into English.就等于Will you (please )turn thes Chinese sentences into English?所以可以总结出一个结果：Please+祈使句=Will you (please)...所以此句要么改成：Please turn these Chinese sentences into English.要么改成：Will you turn these Chinese sentences into English?要么改成：Turn these Chinese sentences into English,will you?这三种形式.

Please translate these Chinese sentences into English, will you?
用into因为是要翻译成
把turn改称了translate更准确一些

Please turn these Chinese sentences INTO English, will you?
turn ... into 固定搭配，将...变为，上题中意思是“将...翻译为”