Usage of causative get, have and make

Hey Everyone…How’s it going?

Sometimes English is quite complicated and this is the case with this topic. The rule says, “Use the Causative to show that one person causes another person to do something”. Ex: I got my sister to help me, at this point everything looks great. However, regarding grammar rules, they say, " With get, use an object and an infinitive. With have, use an object and a base form of a verb." So, same example, "I had my sister help."Now I wonder, Why does it have to be like that? I mean, wouldn’t be right to say, “I had my sister help ME” For me it sounds much better in this way, but you are the ones who know about it. The example’s been taken from a grammar book.

Plus, make in this “causative thing” suggest an obligation. So same example I’ve been using, “I made my sister help me finish the job.” If you notice, you in this case use the object “ME”, I have no clue WHY…

So, I hope someone can explain this to me and if it is possible to bring up some extra examples. That would be so great…

Thanks in advance!

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The grammar book did not intend to mislead. Either is fine: I had/made my sister help (me) finish. But of course, ‘me’ identifies who was helped.
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hi everyone, i want someone to help me distinguish between “must” and “have to”.
thanks alot

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Hello, Engy-- and welcome to English-test.net. When you have a question on a new grammar topic, please start a new thread. Thanks.
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Thanks Mr. Micawber! But in the sentence, I had/made my sister help (me) finish the ME (object) is optional or it’s necessary, what would be?

Hi Serzige

Any of these are possible, for example:

I had/made my sister help.
I had/made my sister help with that.
I had/made my sister help finish that.
I had/made my sister help me.
I had/made my sister help me with that.
I had/made my sister help me finish that.

You can replace “me” with other pronouns (e.g. you/him/her/us/them) depending on who received the help.
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