1. How much does this laptop cost?
2. How much does this desktop cost?
3. How much does this computer cost?
4. How much does this tablet cost? (指平版电脑）
‘贰’ 这台电脑花费她1800元英文怎么写
The computer cost her ￥1800
‘叁’ 这台电脑没花他多少钱英语否定要不要前置
当主句谓语动词是think, believe, feel, guess, expect, suppose, imagine等表示“观点、信念、推测、臆测”等心理活动时，宾语从句中常常使用否定前置这种结构。
你问的的 这台电脑没花他多少钱 可以译为
This computer didnt cost him much money. 这里面没有宾语从句。
这句英语是This computer cost him much money.的正常否定句。不是否定前置。
‘肆’ 这台电脑要花多少钱的英文两种
How much does the computer cost？
How much is the computer？
‘伍’ 昨天我花了三千元钱买这台电脑用两种方式翻译成英语
Yesterday I spent three thousand yuan on this computer.
I bought this computer yesterday for three thousand yuan .
‘陆’ 我花了5000元买了这台电脑4四种英文表达方式
I spent five thousand dollars on this computer.
This computer cost me five thousand dollars.
I paid five thousand dollars to buy this computer.
I bought this computer at the cost of five thousand dollars.
‘柒’ 他正在为这台电脑付钱英语表达
He is paying for the computer.
‘捌’ 我想以两百元的价格卖掉这台旧电脑用英语怎莫说
I want to sell the old computer to the price of two hundred yuan
‘玖’ 这台电脑花了我4000元 英文翻译
This computer cost me 4000 yuan.
这里的cost不加s，是因为这个句子是一般过去时，一般动词的过去式是在词尾加ed，但是cost的过去式还是cost。强调四千元已经花费了
此外，加s也是对的，如果是陈述“买电脑花了四千元”这一事实，可以用一般现在时，这是cost需要加s