Unit 4 Learning efficiently
有些書只須淺嘗，有些書可以吞咽（囫圇吞棗），只有少數須要咀嚼、慢慢地消化。
we have 40 students in our class. some are from the local city, others from the countryside and a few from other provinces.我們班有40人。一些是本市的，（另）一些是鄉下的，還有少數來自外省。
21. prefer to … rather than…寧可。。。而不愿。。。
i prefer to be shown what to do rather than be told.我寧愿人家做給我看，而不愿要別人跟我說如何如何去做。
they prefer to listen to explanations or instructions rather than read them.他們寧愿聽（別人）解釋或指示，也不去讀。
22. too …to do sth 太。。。以至不能。。。
it’s never too late to learn.活到老學到老（永遠也不會太遲了以至不能學習）。
23. i wish i were doing as well in my english class.我希望在英語課堂上做的同樣好。
wish后的賓語從句要用虛擬語氣。（參見本單元“語法知識歸納”）
24. can you figure out … ?你能領會到/算出來……？
can you figure out the meaning of unknown words from the context?你能從上下文中斷定生詞的意思嗎？
三、課文長句難點剖析
1. it is the same with reading.
剖析：句子中it is the same with是“。。。也如此”的意思，相當于so it is with…句型。用于前面描述的是“兩中或兩種以上”的不同情況，這些情況對于后者來說也如此。比如：
—tom is very weak and lazy.湯姆非常虛弱也很懶。
—so it is with his wife./it is the same with his wife.他的妻子也如此。
譯文：閱讀也如此。
2. one way to test whether a text is at the right level is to read the first page.
剖析：動詞不定式短語作定語修飾way；該不定式短語里含有一個賓語從句。
譯文：檢測一篇課文是否適合（閱讀）的方法就是先讀第一頁。
3. if the percentage of new words is higher than 3%, you will not be able to read the text easily and so will probably not enjoy it.
剖析：句子中and 是連詞、so是副詞，連詞and可以表示“因果”關系，所以，該句中沒有so也是正確的。這不是倒裝句。
4. that way you would be practicing reading in english as well as studying biology.
剖析：句中as well as是固定短語，意思是：也、又。比如：this boy is lively as well as healthy.
譯文：這樣子，你們既訓練了英語閱讀又學習了生物。
5. … but i still get only about 20 out of 40 correct in the test.
剖析：句子中out of是“從。。。里面”的意思。該短語還有“在。。。外、離開、出于/由于、缺乏、越出。。。之外”等意思。（參見：第三單元“關鍵短語詳解”第6條）
his coat was made out of his father’s.他的襖子是用他父親的襖子改制成的。
譯文：可是在測試中，四十個單詞我仍然只能正確地寫出20個左右。
6. i would rather rely on a written list than on my memory.
剖析：句子中rely on是“依仗、信賴、對。。。有信心”意思。比如：you may rely on it that she won’t be late.你們可以放心，她不會 遲到的。