doing sth，sth，动词ing形式或者直接接事情
"Spell"是一个不规则动词，它的过去式形式有两种。一种是“spelled”，另一种是“spelt”。这个现象并不稀奇，很多不规则动词在过去式形式上会有多种变化。实际上，“spelt”是“spelled”的变体，最初几乎只在英式英语中使用。但是，日益增长的全球化趋势和日益密切的国际联系，使得这个形式在美式英语和其他英语方言中也逐渐普及开来。
所以，“spelled”通常在美式英语中更为普遍，而“spelt”通常更常用于英式英语中。当然，即使在一个国家的使用中，这两种形式也可能在不同情况下分别使用。
1. I spend a lot of money on clothes.
2. How much did you spend on your vacation?
3. He spends most of his income on food and rent.
4. Don't spend all your money at once!
意思2：度过、消磨
1. She spends her weekends hiking in the mountains.
2. He spent the afternoon playing video games.
3. I spent my childhood in a small town.
4. Let's spend some time together and catch up.
意思3：（动物）虚度光阴、度日如年
1. The lion spends most of the day sleeping.
2. The old dog spends his days lying in the sun.
3. Cats love spending their time napping.
4. The bear spends the winter months hibernating.
意思4：用尽、耗尽
1. I have already spent all my savings.
2. She spent all her energy on the project.
3. The company spent millions on advertising.
4. Don't spend your time worrying about things you can't change.
意思5：投入、耗费
1.The company is planning to spend a lot of money on research and development.
2. He spent a lot of time and effort preparing for the exam.
3. The government has spent billions on infrastructure projects.
4. She always spends a lot of money on gifts for her friends and family.
注意，spend作为动词的时候，通常后面需要跟上花费的具体对象，如：money, time, effort等，否则就需要通过上下文来理解其具体含义。