容易弄錯的句子
有些動詞後面，通常都用不定式。
最常用的動詞是：
decide (to), need (to), hope (to), expect (to), plan (to), promise (to), agree (to), refuse (to), appear (to), seem (to), pretend (to), try (to), want (to), can/can't afford (to), would like(to)等。
例如：
Mr. A promised his wife never to lie to her again.
（A先生答應太太不再欺騙她。）
（動詞promised後面用不定式 to lie）
Many people can't afford to buy a house.
（許多人買不起一棟房子。）
（can't afford後面用不定式to buy）
（33）有些動詞後面，可用動名詞或不定式，意義相同。
這種動詞最常用的是：
begin, start, continue, like, hate, intend, can't stand等。
例如：
John likes to go to the library every week.
（John每周喜歡去圖書館。）
＝John likes going to the library every week.
（動詞likes後面，可用不定式to go或動名詞go-ing）
I continue to write (或writing) articles for World Weekly.
（我繼續為世界周刊寫稿。）
Mr. Wang can't stand to sleep (或sleeping) in a room without fresh air.
（王先生睡覺不能忍受沒有新鮮空氣的房間。）
於是，不定式有時可取代動名詞：
例如：To climb mountains is interesting.
= Climbing mountains is interesting.
= It is interesting to climb mountains.
(it = to climb mountains)
（34）used to後面，用動詞原形，而be used to後面是用名詞或動名詞。
例如：
Mr. J used to work at the university.
(J先生過去在大學工作。)
(to是不定詞符號，故動詞用原形work，表示過去在大學工作，現在不是了)
Mrs. A used to be afraid of dogs.
（表示A太太過去怕狗，現在也許不怕了。）
但是：
Mr. B is (或gets) used to the cold weather.
= Mr. B is (或gets) accustomed to the cold weather.
(B先生適應冷的天氣。)
(這裡to是介詞，故後面用名詞 weather)
也可以說：
Mr. B is (或gets) used to living in the cold weather.
= Mr.B is (或gets) accustomed to living in the cold weather.
(to是介詞，後面也可用動名詞living)
如果說：
I am getting used to the cold weather.
(表示強調慢慢適應）
（35）would rather和had better可指現在或將來，後面動詞都用原形。
例如：
Mr. A would rather visit California than (visit) Chicago.
(A先生寧可去加州而不去芝加哥。)
(would rather後面用動詞原形visit，第二個visit可省去)
(He would rather= He'd rather)
I would rather have tea than (have) coffee.
(我寧可喝茶，不喝咖啡。)
= I like tea better than coffee = I prefer tea to coffee.
(would rather後面動詞原形have)
至於had better(='d better)，不指過去，動詞也用原形。
例如：
You had better (= you'd better) study harder.
(你最好用功些。)
(had better 後面動詞原形study)
（36）介詞except和like，與連接詞 unless和 as，中文意義頗有相似，但用法不同。
例如：
不說：Bob will not finish up his work except you give (him) an order.
要說：Bob will not finish up his work unless you give (him) an order.
(除非你給Bob下個命令，他不會做完他的工作。）
（要把介詞except，改為連接詞unless，才可連接兩個句子）
不說：
Mr. Wang works very hard like I always do.
要說：
Mr. Wang works very hard as I always do.
（王先生像我一樣工作努力。）
（like是動詞或介詞，這裡是介詞，故要改為連接詞as,才能連接兩個句子）
（37）連接詞as…as是用在肯定句，而so…as是用在否定句。
例如：
John seems as capable as Bob.
（John 似乎與Bob一樣能幹。）（肯定句）
Mr. A is not so honest as his younger brother.
（A 先生不如他弟弟誠實。）（否定句）
（38）to be supposed to +動詞原形，表示某件事，預料將來會發生。
例如：
Mr. B is supposed to visit me this afternoon.
（今天下午B先生要來看我。）
（也許彼此約定好）
The students are supposed to write a paper next week.
(學生下周要寫一篇文章。)
(表示照規定要寫)
It is supposed to rain tomorrow.
(明天會下雨。)
(也許照天氣預告)
