(2)對固定結(jié)構(gòu)的考查，如：

　�、� the professor could hardly find sufficient grounds _____ his

　　arguments in favor of the new theory。(2000。6)

　　a。 to be based on b。 to base on

　　c。 which to base on d。 on which to base

　�、� the pressure _____ causes americans to be energetic， but it

　　also puts them under a constant emotional strain。

　　a。 to compete b。 competing

　　c。 to be competed d。 having competed

　�、兕}為不定式做定語的固定形式，答案為d，②題為某些特定名詞的定語結(jié)構(gòu)，答案為a。在英語中有些名詞，如動詞變來的名詞，形容詞變來的名詞，以及means， way， time， moment， reason等要求其后用不定式做定語，不定式?jīng)]有體的變化。

　　4) 做狀語的非謂語動詞的選擇

　　做狀語的非謂語動詞主要考查其各種形式的選擇，如：

　　① ______ the earth to be flat， many feared that columbus would fall off the edge of the earth。(1996。6)

　　a。 having believed b。 believing c。 believed d。 being believed

　�、� _______ a teacher in a university， it is necessary to have at least a master‘s degree。(1995。1)

　　a。 to become b。 become c。 one becomes d。 on becoming

　�、� realizing that he hadn‘t enough money and ____ to borrow from his father， he decided to sell his watch。(1995。1)

　　a。 not wanted b。 no to want c。 not wanting d。 wanting not

　�、� ___ it or not， his discovery has created a stir in scientific circles。(1997。1)

　　a。 believe b。 to believe c。 believing d。 believed

　　從以上各題來看，考查的側(cè)重點有：

　　(1)狀語類別的判斷

　　不同的狀語對非謂語動詞的要求不同，目的狀語要求用不定式，如②。

　　(2)非謂語動詞與句子屬于之間的邏輯關(guān)系

　　根據(jù)主謂關(guān)系或動賓關(guān)系的不同來確定用現(xiàn)在分詞還是用過去分詞。

　　(3)非謂語動詞的否定形式

　　not否定非謂語動詞時置于非謂語動詞之前，如③。

　　(4) 獨立成分

　　有些非謂語動詞的使用不受與句子主語關(guān)系的限制，稱為獨立成分，這類成 分只記憶即可。如：

　　generally speaking， judging from……， to tell the truth……， 等。

　　5) 做補足語的非謂語動詞的選擇

　　做賓語補足語的非謂語動詞受謂語動詞的限制，不同動詞后的賓語補足語形式要求不同。近幾年對各類賓補都有考查。如：

　�、� they are going to have the service man ____ an electric fan in the office tomorrow。(1998。1)

　　a。 install b。 to install c。 to be installed d。 installed

　�、� after a few rounds of talks， both sides regarded the territory dispute ______。(1998。6)

　　a。 being settled b。 to be settled c。 had settled d。 as settled