短语部分没有独立主语,则短语结构称为非谓语动词。 ; k- X5 M6 c" F6 z- Z4 ~$ R
非谓语动词的结构:分词(分词短语) : n0 U5 ]( b0 Y4 i2 c; c' @, y
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。 + I3 |( r; Q5 y" B3 ~& F
1.No matter how frequently _A_, the works of Beethoven always attract large audiences. ( h9 V2 K; t) H$ D+ N; N: e
A performed B performing C to be performed D being performed
, F5 T, f/ G5 C% ?$ b perform vt. 表演,演出,演奏; : M6 y b" d; n9 O5 l
to be performed 将要被演奏; being performed 正在被演奏; + B# T; T; d/ x# R* ]
一些特殊的动词: * W& P$ N( ?! M" o
第一点:forget 忘记; [反义] remember 记得; & S' j5 R4 T5 {1 X
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。
; p2 R+ z0 h2 t 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。 ' w+ [( Q* E& o. E- h- m7 y$ t
forget to do sth. 忘记要去做某事; forget doing sth. 忘记做过某事; $ T. r+ O- X* S9 y
remember to do sth. 记得要去做某事; remember doing sth. 记得做过某事; ) w- f# D, M2 F" w% s1 F, ]5 Z7 V, J
2. I remember _B_ to help us if we ever got into trouble.
; X9 ]$ u% `% f, i" X1 T A once offering B him once offering C him to offer D to offer him
9 w" W( _ ]4 p+ J4 k& n offer vt. 提出,提供; offer sb. sth. / offer to do sth. . V, z4 W% M: N6 {5 a# m
him once offering 如果改成 his once offering 也正确。 |