I need work hard to gain money为什么没错呢?need做情态动词或实义动词时怎么区分呢这里不是应该有to
need做情态动词时 后面应该接动词原形
I need work hard to gain money这句话中的need后面接了动词原形work,所以这个need是情态动词.
当need做实意动词时,必须遵循句型:need to do sth
I need to work hard to gain money.这个句子中need后面接的是 to work,所以need在这里是实意动词.