sunshieeos
buy-bought-bought购买pay-paid-paid一般用法:pay $ for sth.purchase-purchased-purchasedsb. purchase sth.eg. You can purchase insurance online. 你可以在网上购买保险I spend(spend-spent-spent) $/time on doing sth./to do sth.It cost/takes me $/time to do sth.*这个前面一般是是物体
今生无悔瓶
我造几个句把...costthe shirt cost me 100 yuanspendhow much did you spend on this shirti don't want to spend so much on a shirtpayhow much did you pay for this shirti'll pay you back 还钱takei'll take this one我就买这件,比较口语化