1、主语+think+it+adj.+to do…
My father thinks it interesting to shop online. 我父亲认为网上购物很有趣。
2、主语+consider+it+adj.+to do…
I consider it necessary to face the pains bravely.
我考虑勇敢面对痛苦是必要的。
3、*** +find +it+adj.+to do…
Lucy found it difficult to learn Chinese.
露西发现学习汉语很困难。