初三 英语 英语. 请详细解答,谢谢! (6 11:49:0)

(1)pay作动词时,意思是“付款”或“支付”,多以人为主语,可以有被动语态.
短语pay for
是付款,为...花费的,主语是人
如：I'm afraid (that)if you've e lost it ,you must pay for it .
I haven't paid the seller yet .
The doctor was paid 500 dollars for the operation .
(2)cost作动词用时,意思是“值……钱；价值为,花费”.以物或事做主语,不能以人作主语,也不能用于被动语态.
句型sth cost sb some money
物花费的钱
如：I like this dress ,but it costs too much .
This pencil—box cost me ten yuan .
不能说I cost ten yuan for this pencil—box .
也不能说I was cost ten yuan for this pencil—box .
但却可以说I paid ten yuan for this pencil—box .
或者还可以说I spent ten yuan on this pencil—box .
(3)spend只能作动词用,意思是花费(钱、时间),渡(时光、假期),多以人为主语.
句型sb spend some money on sth.
sb spend some time doing sth.
人花费钱或时间
She spent a lot of money on clothes .
(= she spent a lot of money in buying clothes .)
I went back to my home town to spend my holidays last summer .
Half his money was spent for medicine
(4) take v.花（某人）（钱、时间）去做……,多以it 作形式主语.
句型it takes sb some time to do sth
it开头的,只用于花费时间
例：It took him a lot of money to buy a fur coat .
他买皮衣花了很多钱.
注意：It takes sb .some time to do sth .(某人做某事花费时间)
该句型只能表达“花费时间”而不能用于“花费金钱”.
如：It takes him two hours to do his homework every day .
(He spends two hours)
不能说It took him five yuan to buy these apples .
而应该说He spent five yuan on these apples .
或者说He paid five yuan for these apples .
还可说These apples cost (him) five yuan .

pay多用于动作的发出者，常和for搭配。
cost用于使用了多少钱等，直接给名词，也就是后面直接跟用了多少钱
spend经常和on搭配，课表示花了钱和时间。注意后面有on的
take常用于用了多少时间，后面直接跟时间

pay一般是人做主语，一般是pay sb some money或pay some money for sth
cost一般是It 或者是sth做主语：sth cost sb some money
spend是人或物都可做主语的，但人做主语更多，一半是spend money/time
:spend some money on sth；spend some time (in) ...

pay 支付钱
pay ..for ...付钱买
I paid 100rmb for the bike. 我付了100元买这辆车
cost 指买者所付的费用，价钱。也指时间，劳动的损失。
The bike cost me 100 rmb. (花了某人多少钱）这辆车花了我100元
the cost in lives 人命的牺牲
it cost me o...

pay 指 付钱 通常是 pay 金钱数额 for 所买的东西，主语是人。如：I paid 3 dollars for a cup. 我为一个杯子付了3美元。 意思上等同于：我花3美元买了一个杯子。
cost 指 价值多少钱，主语是所买之物。 如 This cup costs me 3 dollars. 这个杯子价值3美元。也就是说这个杯子花了我3美元。
spend 指 花费了多少...