1
general::
verb PHRASAL VERBS rely on/upon sb/sth need sb/sth ADV. heavily, a lot, strongly countries that rely heavily on food aid | entirely, exclusively, solely | increasingly | largely, mainly | traditionally VERB + RELY be forced to, have to, must people who are forced to rely on public transport | tend to PREP. for They relied entirely on these few weapons for their defence. trust sb/sth ADV. safely You can safely rely on his judgement. | simply Most historians simply rely on archives. VERB + RELY can/could | can/could always | can/could no longer The party could no longer rely on its traditional supporters. PREP. for I couldn't rely on John for information.
Oxford Collocations Dictionary
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general::
rely on sb/sth
2. to trust someone or something or to expect them to behave in a particular way
• British weather can never be relied on - it's always changing.
• [ + -ing verb ]: Don't rely on finding me here when you get back (= I might have gone)., rely on sb/sth
1. to need a particular thing or the help and support of someone or something in order to continue, to work
• orrectly, or to succeed
• [ + -ing verb ]: The success of this project relies on everyone making an effort.
• I rely on you for good advice.
• [ + to infinitive ]: I'm relying on the garage to fix the car by tomorrow.
Cambridge-Phrasal Verbs