③、感官动词
hear, feel, watch, see, notice, observe
see sb do sth. 强调过程
see sb doing sth 正在做某事
B. 动词不定式的固定用法
(1)表示第一人
the first woman to do sth.
(2)表示迫使的动词
一般考三个, allow/ enable/ call, +sb. + to do
例:Besides providing clues to the nature of atoms, mineral analysis
A B
allows to speculate geologists about the ancient Earth.
C D
分析:allow...to do是固定短语,allow的宾语应在不定式之前,即把C改为: allow geologists to speculate。
(3)表示倾向…的形容词
be more likely to do 更有可能作某事
be inclined to do倾向于做某事
be liable to do 易于…的
be apt to do
(4)表示目的的名词,一共有7个这样的词,这一条也是最重要的。
固定的句式:
the purpose , the purpose of sth is to do sth.
the objective 目标
aim
goal
reason理由
function功能
intension意图
例:The function of Louis Sullivan's architecture was providing
A
large uninterrupted floor areas and to allow ample light into the interior.
B C D
分析:the function to provide, A错
例:The chief goal of biochemistry is for understanding the structure
A
and behavior of the carbon-containing compounds
B
that make up various components of a living cell.
C D
分析:the chief goal is to understand, A错
(5) 其他同根名词
ability to do 受到be able to 的影响
attempt to do 企图
decision to do 决定, 受decide的影响
ambition,
be ambitious to do
effort
例:For ancient people, myths were often attempts explanation
A B