He'll keep his pledge to donate 10,000 mosquito nets to charity to help fight Malaria in Africa
I would analyse this sentence as follows:
Subject= He
Verbs = will keep
direct object= his pledge to donate 10,000 mosquito nets (It's the direct object because it answers the question: will keep what?).
Adverbial/ adjunct of purpose = to help fight Malaria in Africa.(this clause is an adverbial/adjunct because it states why he is keeping his pledge to donate the nets.
The adverbial adjunct refers to the verb phrase will keep his pledge because it says why he keeps the pledge.( the purpose of keeping the pledge).
That's not impossible. But can you tell me why the boldfaced phrase cannot modify the verb 'donate'? I mean, doesn't it say why he donates 10,000 mosquito nets to charity? – listeneva – 2018-02-25T15:38:44.050
Yes it does.. I indicated this in my answer. The bold part is an adverbial which refers back to the verb action of keeping the pledge. It says why the pledge has been kept. Adverbials always refer back to the verb or the action and in this case the bold part is an adverbial telling us why he kept his pledge. – user242899 – 2018-02-25T22:54:53.133
No, I'm talking about the possibility that the verb is not "keep" but "donate". – listeneva – 2018-02-26T00:34:34.467
You have to ask what he is doing and to know this you look at the main verb of the sentence and any helping verb. In this case the main verb is keep and the helping verb is will. – user242899 – 2018-02-26T16:56:32.673
The main verb and helper are keep and will.. If donate was the main verb then your sentence would read like this: He will donate 100,000 Mosquito nets to charity etc. etc.. – user242899 – 2018-02-26T17:05:48.600
Consider this easier sentence: He loves to play the piano for his friends. The main verb here is loves and the direct object is the infinitive phrase = to play the piano. The adverbial of purpose is for his friends. In your sentence I think the infinitive phrase to donate is just part of a modifying phrase that acts as a direct object. – user242899 – 2018-02-26T17:23:29.217