Foreign Plurals in English

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English is the only language that I know of that uses foreign plurals.
This means that while speaking English, you are expected to know the plurals of words IN FOREIGN LANGUAGES!
This is ridiculous. It is one of the many things that make learning English a frustrating task.
The first column is the singular of the word. The second column is the plural in the foreign language.

Words from Latin Ending in A
alga   - algae  
alumna  - alumnae
amoeba   - amoebae  
antenna  - antennae  
formula  - formulae  
larva   - larvae  
nebula   - nebulae  
vertebra  - vertebrae 


Words from Latin Ending in US
alumnus  - alumni
bacillus  - bacilli  
cactus   - cacti   
corpus   - corpora
focus   - foci  
fungus   - fungi   
nucleus  - nuclei  
octopus  - octopi   
prospectus  - prospecti
radius   - radii  
stimulus  - stimuli  
syllabus  - syllabi  
terminus  - termini 
viscus   - viscera


Words from Latin Ending in UM - 
addendum  - addenda  
bacterium  - bacteria  
curriculum  - curricula  
datum   - data  
erratum  - errata  
medium    - media  
memorandum  - memoranda  
ovum   - ova  
stratum  - strata  
symposium  - symposia  


Words from Latin Ending in X
apex   - apices    
appendix  - appendices  
cervix   - cervices  
index   - indices  
matrix   - matrices  
vortex   - vortices 


Words from Greek Ending in IS
The ES ending is pronounced like “ease”
analysis  - analyses
axis   - axes
basis   - bases
crisis   - crises
diagnosis  - diagnoses
ellipsis   - ellipses
emphasis  - emphases
genesis  - geneses
hypothesis  - hypotheses
nemesis  - nemeses
neurosis  - neuroses
oasis   - oases
parenthesis  - parentheses
psychosis  - psychoses
synopsis  - synopses
synthesis  - syntheses
thesis   - theses

Words from Greek with Pseudo-Latin Endings
Hippopotamus - hippopotami 
octopus  - octopi   
platypus  - platypi  

Words from Greek Ending in ON
automaton  - automata
criterion  - criteria
phenomenon  - phenomena
polyhedron  - polyhedra


Words from Greek Ending in A
dogma -   - dogmata 
schema  - schemata 


Words from Greek ending in OS
rhinoceros  - rhinoceroses


Words from Italian ending in O
graffito   - graffiti
libretto   - libretti  
tempo   - tempi  
virtuoso  - virtuosi   
concerto - concerti 

Words from Hebrew  
cherub   - cherubim 
matzoh  -   - matzot  
seraph   - seraphim 


Words from French
beau   - beaux
bureau   - bureaux 
chateau  - chateaux 
	

Here's a proposal. Ditch the foreign plurals and add an S or an ES to the end of the word to make a plural. That way, foreign words would look and act just like most English words, and English would not be ridiculously impossible to learn like it is now.