短语部分没有独立主语,则短语结构称为非谓语动词。 2 V! N$ Y% b$ h# ~- V. a
非谓语动词的结构:分词(分词短语) 4 b2 l5 m+ m5 d) t2 D* }; r
句子的主语决定非谓语动词中的分词是用主动还是被动形式。如果是句子的主语发出动作,则使用现在分词;如果动作不是由句子的主语发出,则使用过去分词。 # l- N2 x. U X
1.No matter how frequently _A_, the works of Beethoven always attract large audiences. ' V1 Z5 @+ q+ k3 V
A performed B performing C to be performed D being performed , |: O' ?( D5 ?! c2 R) t2 ?! h
perform vt. 表演,演出,演奏; . v' d# e9 R3 }! ^! E to be performed 将要被演奏; being performed 正在被演奏; 1 r% Q% s( |$ {5 U# W# D
一些特殊的动词: 8 S: E+ X1 Y$ Y( d6 ? p
第一点:forget 忘记; [反义] remember 记得; " E9 O! u" ?& E) e0 R, R6 _0 d 这两个词后加动词不定式表示将要进行的行为;这两个词后加动词ing形式表示已经做过的事情。 # L$ d3 b; P$ [6 m1 J' u7 O
注意:动名词与现在分词形式一样,但含义不同。这两个词后加动词ing形式都是动名词。 & I$ Y' S- W& c) G0 ^
forget to do sth. 忘记要去做某事; forget doing sth. 忘记做过某事; 9 ^& c& `3 |4 ?# |3 _8 p
remember to do sth. 记得要去做某事; remember doing sth. 记得做过某事; * ^% O* I* A; ^ U8 `& A! l! Z9 [% E 2. I remember _B_ to help us if we ever got into trouble. $ h9 a2 @; {* T A once offering B him once offering C him to offer D to offer him " s# t# S* ?$ X2 E- ]9 J9 u; A4 I offer vt. 提出,提供; offer sb. sth. / offer to do sth. $ t4 u/ J/ O0 i) ~5 L6 O& \1 Z; G him once offering 如果改成 his once offering 也正确。