210. It is /will be difficult to...……(会)很难。
I think it will be difficult to tell her the truth. 我认为告诉她真相会很难。
209. It is (really) unbelievable that...……(真)让人难以置信。
It's really unbelievable that such an honest fellow should have betrayed his friends!
这样一个老实人竟会出卖朋友，真让人难以置信1
208. It's a shame / pity that... 可惜/遗憾……。
It's a shame that you cannot make it to the party tonight. 今晚你不能来参加聚会，真可惜。
207. It's wrong to...……是不对的。
It's wrong to read people's private letters without permission.未经允许看别人的私人信件是不对的。
206. It's our duty to... ……是我们的责任。
It's our duty to protect the forests from destruction. 保护森林免遭破坏是我们的责任。
205. It's (not) good to...……(不)好。
It's not good to get into the habit of telling lies. 养成说谎的习惯不好。
204.lt's my great honor to...……是我莫大的荣幸。
It's my great honor to introduce the governor. 我很荣幸向大家介绍我们的州长。
203. It's delightful to...……令人很高兴。
lt's delightful to play by the seashore. 在海滨玩令人很高兴。
202. It's customary to...…是习惯。
It's customary to give people gifts on their birthday. 过生日送礼物是一种习俗。
201. It's a great pleasure to...……(感到)非常愉快。
It's a great pleasure to do business with you. 跟你做生意我感到非常愉快。