必修三模塊四 Sandstorms in Asia學(xué)案
step iii grammar 2
t: please turn your book to page36. at the beginning of the class, i told you that the infinitive structure has two types. one is to-infinitive, the other is bare infinitive. now let’s look at the second type of the infinitive structure. “but + infinitive” is one of the bare infinitive. who knows how to use this structure?
s: we don’t know.
t: if there is a word “do” before the conjunction “but” we should use bare infinitive.
e.g. we have nothing to do now but wait.
tom never does anything but talk.
if there is no “do” before the conjunction “but” we should use to-infinitive.
e.g. they desired nothing but to succeed.
i have no choice but to accept the fact.
t: now, look at the ex.1&2 on page 36 and find the answers.
possible explanations:
1. we do nothing except to talk. ( 可換成 “but”, 但要去掉 “to”)
2. i have to feel very concerned because i can’t do help. ( 我只能擔(dān)心，因?yàn)槲規(guī)筒涣四?br>help 是名詞 )
3. i can’t do anything but wonder what will happen. ( 除了想知道將要發(fā)生什么，我不想作任何事情，言外之意就是，我非常想知道將發(fā)生什么事)
1. but 2. think 3. choose 4. complaining 5.love 6. nothing
possible explanations:
1. help vt. 應(yīng)有賓語，所以判斷此句中help 是名詞，完整形式應(yīng)是 “do help”.
2. 同上
3. chose vt. 又 因but 后是原型。
4. 因?yàn)閎ut 前有"do”
5. 同1
6. do 應(yīng)有賓語
其他結(jié)構(gòu)：
① 口語中 go ,come 后可不用to
go tell her. 去告訴他吧。
come have a glass. 來喝一杯吧。
② 在than 后不帶 to
i would rather go than stay
you cannot do better than go.
③ 在一些固定詞組中省去to
hear, make, let, see, 但在被動語態(tài)中要加上。
疑問詞why 引導(dǎo)的省略句中省去to.
why not try again？
step iv homework
1complete the exercises 1, 2, 3&4 on page 85
2choose the correct answer.
1). such people are_______.
a. respect b. to respect c. to be respecting d. to be respected
2). there is nothing to do but________ till it stops snowing.
a. to wait b. waiting c. wait d. waits
3). i’m sorry ________ you so much trouble. and thank you for your help.
a. to give b. to have given c. giving d. gave
4). tom is said ______ abroad, but i don’t know what country he studied in.