早教吧作业答案频道 -->英语-->
关于let和help接不定式用法的疑问?let'shelptomtolearnenglish.这里help接不定式为什么必须要用tolearn?Iwantedyoutohelpherdothehousework.这里却为什么不能用todo,而必须用do?
题目详情
关于let和help接不定式用法的疑问? let's help tom to learn english.这里help接不定式为什么必须要用to learn?
I wanted you to help her do the house work.这里却为什么不能用to do,而必须用do?
I wanted you to help her do the house work.这里却为什么不能用to do,而必须用do?
▼优质解答
答案和解析
help sb. (to) do sth.这里to可以省略,是“可以”,所以加或不加to都一样的,无所谓必须加或不加的说法.
另,像感官动词see, hear和使役动词make,let等后接不定式to常省略.但改为被动句时to必须要还原.
如:He made them work day and night.
——They were made to work day and night.
另,像感官动词see, hear和使役动词make,let等后接不定式to常省略.但改为被动句时to必须要还原.
如:He made them work day and night.
——They were made to work day and night.
看了关于let和help接不定式用...的网友还看了以下:
线性代数 方阵的行列式的性质:请证明方阵的行列式的性质:A,B为方阵,则AB乘积的行列式等于A的行 2020-05-15 …
(2013•铁岭)如图,△ABC内接与⊙O,AB是直径,⊙O的切线PC交BA的延长线于点P,OF∥ 2020-06-15 …
如图AB=AC,CD⊥AB于D,BE⊥AC于E,BE与CD相交于点O.(1)求证AD=AE;(2) 2020-06-27 …
如图,△ABC内接于⊙O,且AB>AC.∠BAC的外角平分线交⊙O于E,EF⊥AB,垂足为F.(1 2020-07-09 …
如图,△ABC内接于O,AC为O的直径,PB是O的切线,B为切点,OP⊥BC,垂足为E,交O于D, 2020-07-16 …
正方形ABCD内接于O,如图所示,在劣弧上取一点E,连接DE、BE,过点D作DF∥BE交O于点F, 2020-07-21 …
如图1,△ABC内接于⊙O,AD平分∠BAC,交⊙O于点D,交BC于点K,过CB延长线上一点E作∠ 2020-07-27 …
如图:三角形ABC内接于圆O,∠BAC与∠ABC的角平分线AE,BE相交于点E,延长AE交外接圆O 2020-08-01 …
如图9-1,已知ABCD是边长为4的正方形,E是CD边上的一个动点,连接AE,AE的延长线交BC的延 2020-11-01 …
如图△ABC内接于圆O且AB=AC,点D在圆上AD⊥AB于点A,AD与BC交于点E,如图,△ABC内 2020-11-03 …