动词不定式的固定用法 1. 人 the first (sb) to do 2. 表迫使的动词 allow sb to do allow sth permit sb to do permit sth enable sb to do enable sth cause sb to do cause sth force sb to do force sth 3. 表倾向的adj./V te
动词不定式的省略用法 1. ┏help to do = help do 可省可不省 ┗help sb to do = help sb do 2. 使役动词必省to let sb do ; make sb do; have sb do ; bid sb do have sth done 3. 关于感观动词 see, hear, notice, feel, watc
