1、 explain
解释;说明，后面接名词、从句作宾语。
Will you please explain the third paragraph again for us?
请您把第三段给我们再解释一下好吗?Can you explain why you were late? 你能解释一下你为什么迟到吗?
2、return
(1) “返回”，相当于“go back / get back / come back.. 如:
Ann will visit you when he returns to London. (当“返回”时是不及物动词，先加to才可再加地点。另外，return已含有back的意思，后不可再跟back.)
(2) “归还”，相当于“give back”。
I have returned the dictionary.
You should return the piano to Dick on time.
3、 leave
(1) leave for 是出发至某处 如:
He left for Beijing yesterday.
(2) leave sth for sb
把什么留给什么人
She left these flowers for you.
leave sb for sb
离开什么人去和什么人在一起
He left his wife for a young lady.
(3) leave sth to do sth
做某事离开某处
He left her house to catch the last bus.
(4) leave sb doing sth
让某人单独做某事
Don't leave your children playing with fire.
【forget和leave的用法与区别】
forget to do 忘记做某事
forget doing 忘记曾做过某事
leave sth some place
把某物落在某地(忘在某地)
I left my assignment at home.
(我把作业落在家里了)
I forget to bring my assignment
(我忘记带作业了)
4、 opinion
(1) n.意见，主张;评价;鉴定，判定
What's your opinion about this trip? 你对这次旅行有什么看法?
(2) in one's opinion.... 在某人看来.
In my opinion, it's important for us to protect the earth.
我认为,对我们来说保护地球很重要.
=I think it is important for us to protect the earth.
5、continue
表示继续做某事，其后既可接动名词也可接不定式，且意义相同。
They continued to meet （meeting） daily. 他们继续每天都见面。
He continued to write （writing）while in hospital.
他住院时他继续写作。
6、compare
(1)表示“把……与……比较”，通常用 compare...with...，或者用 compare...and...
If you compare his work with [and] hers, you'll find hers is much better. 要是把他俩的工作比较一下，就会发现她的好得多。
Having compared the new dictionary with [to, and] the old one, he found the new one more helpful.
将新旧词典比较之后，他发现新词典更有用。
(2)表示“把……比作……”，通常用 compare...to...
Shakespeare compared the world to a stage. 莎士比亚把世界比作舞台。
The poet compares the woman he loves to a rose.
诗人把他所爱的女人比作玫瑰。