高考英語第一輪單元知識點復習Unit 2
...zheng sent a message to the king and to other african states,inviting them to send ambassadors...
……鄭和向這位國王和其他非洲國家發出了邀請，請他們派使者來……
該句子中的inviting them to send ambassadors可以理解為伴隨狀語，可以改為and連接的并列謂語結構:...states and invited them to send ambassadors。
例:he sat there in silence,looking sad and doing nothing.
他默默地坐在那里，看上去很難過，什么也沒做。
the secretary worked late into the night,preparing a long speech for the president.
秘書工作到深夜，為總統準備一個長演講稿。
鏈接•提示
注意使用v.-ing形式作伴隨狀語時，v.-ing的邏輯主語應該和句子的主語一致，即表示主謂關系；如果是邏輯動賓關系，則使用過去分詞形式表示伴隨的動作。如:in order not to be disturbed, i spent three days locked in my study. 在spend time doing sth.這一句型中，doing應該表示主動，而此處的動詞lock按句子的意思應該為被動，所以使用過去分詞。
練:mr.macfarland completed the course successfully, _________ all with his excellent performance.
a.surprised b.surprising c.to surprise d.having surprised
提示:v.-ing形式作伴隨狀語，其邏輯主語為mr macfarland。
答案:b
辨析
1.worth,worthwhile,worthy
worth adj. 值；值得
結構:(1)be worth+money=cost 值；
(2)be worth doing值得做某事(這種結構中的動詞-ing形式，在邏輯上與前面的主語具有動賓關系，但該詞不能用被動式)
(3)表示“很值得……”時用well修飾。
(4)可用引導詞it作be worth的形式主語。
worthy adj.值得的
短語:be worthy of sth.值得
be worthy of being doing 值得做某事
be worthy to be done 值得做某事
worthwhile adj.值得花時間做某事，可以作定語。
結構:be worthwhile doing/to do值得做某事
即時練習:
(1)i only paid $1000 for the car but it is _________ a lot more.
(2)this book is _________ reading a second time.
(3)what he did is _________ praise.
(4)this book is _________ being read a second time.
(5)this book is _________ to be read a second time.
(6)this is a _________ experiment.
(7)it isn’t _________ going/to go there now.
答案:(1)worth (2)worth (3)worthy of (4)worthy of (5)worthy (6)worthwhile (7)worthwhile
2.apart from,besides,except,as well as
apart from=except for,as well as 除了……以外
besides 除了……以外還=as well as另外，besides后還可跟動詞的-ing形式,還可以用作副詞，表示“另外，再說”。
except 除了……以外=not including另外，except 還可以用于:except for(只是；除了)/except that/except when...
as well as “除……之外還……”，表示肯定。