【練習(xí)】

1.?I am sorry ______ written you a letter at the time.

A. to have not ? ?B. to not have ? ?C. not to have ? ? D. not having

答案：??C

解析：??不定式的完成式的否定式做原因狀語(yǔ)，否定詞not必須在不定式之前。

2. She had no money______?a birthday present for her children.

buy with?? which to buy

答案：?D

解析：?介詞＋關(guān)系代詞＋不定式的結(jié)構(gòu)可以在句中用作定語(yǔ)，其作用相當(dāng)于一個(gè)定語(yǔ)從句。9.B。本題考查非謂語(yǔ)動(dòng)詞作定語(yǔ)。不定式作定語(yǔ)時(shí)，表示將來(lái)的動(dòng)作；現(xiàn)在分詞作定語(yǔ),表示主動(dòng)、進(jìn)行；過(guò)去分詞作定語(yǔ)，表示被動(dòng)、完成。因?yàn)閐ates是被標(biāo)在gold coin上，所以用過(guò)去分詞表示被動(dòng)。

3.?Tom apologized to me ______ again.

A. to be late ? ? B. of being late

C. to have been late ? ? ?D. for beinglate

答案：?D

解析：?apologize to sb. for sth./doing sth.為常見(jiàn)搭配.

4.?______?all my letters, I had a drink and went out.

A.Finished?? B.Having finished?? C.Finishing?? D.To finish

答案：?B

解析：?因finish這一動(dòng)作發(fā)生在I had a drink and went out之前,所以必須用現(xiàn)在分詞的完成式。

5.?From the dates______?on the gold coin, it is conformed that it was made five hundred years ago.

g?? be marked?? been marked

答案：?A

解析：?不定式作目的狀語(yǔ)。

6.The policeman came up to the lonely house with the door ____(open), ____(stand) there for a while and then entered it.（填空練習(xí)）

答案：open; stood

解析：?with the door open是with 的復(fù)合結(jié)構(gòu)，open 為形容詞，表狀態(tài)； stood與came，entered為并列關(guān)系,在句中作謂語(yǔ)。

【小知識(shí)】動(dòng)詞不定式可以作下列的狀語(yǔ)

①目的狀語(yǔ)： Every morning he gets up very early to read English.

為了強(qiáng)調(diào)不定式表示目的的作用，可在不定式前加in order to或so as to（以便或?yàn)榱耍?，但?yīng)注意in order to位于句首或句中均可，而so as to不能位于句首，如：She reads China Daily every day in order to (so as to) improve her English.

將表示目的的不定式置于句首，也可強(qiáng)調(diào)目的的作用，如：To master a foreign language, one must work hard at it.

②結(jié)果狀語(yǔ)：They lived to see the liberation of their home town.他們活到親眼見(jiàn)到了他們家鄉(xiāng)的解放。

③too + 形容詞或副詞 + 動(dòng)詞不定式，表示“足能”的結(jié)果，如：You are old enough to take care of yourself now.?