Luke 22:19 (The Message)
Taking bread, he blessed it, broke it, and gave it to them, saying, “This is my body, given for you. Eat it in my memory.”
It has been argued that even the grammar must be taken into account. From the grammatical structure of the sentence is the meaning of transubstantiation derived. The verse in Luke has been used to defend the doctrine of transubstantiation, but what about the next verse of John? Apparently, Jesus really emphasizes the fact that he is a piece of food, waiting to be eaten. How can this not be seen as transubstantiation? Maybe it's metaphorical, but still, he describes himself in a similar way.
John 6:35-40 (New International Version)
Then Jesus declared, “I am the bread of life. Whoever comes to me will never go hungry, and whoever believes in me will never be thirsty. But as I told you, you have seen me and still you do not believe. All those the Father gives me will come to me, and whoever comes to me I will never drive away. For I have come down from heaven not to do my will but to do the will of him who sent me. And this is the will of him who sent me, that I shall lose none of all those he has given me, but raise them up at the last day. For my Father’s will is that everyone who looks to the Son and believes in him shall have eternal life, and I will raise them up at the last day.”
Now, this part seems to get a bit eerie. As it is a piece of dialogue in literature, it illustrates Jesus' character and how he reacts to questions. When prompted by the "Jews", he appears to take the bread as body of Christ literally, which may support the doctrine of transubstantiation.
John 6:52-59 (New International Version)
Then the Jews began to argue sharply among themselves, “How can this man give us his flesh to eat?”
Jesus said to them, “Very truly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. Whoever eats my flesh and drinks my blood has eternal life, and I will raise them up at the last day. For my flesh is real food and my blood is real drink. Whoever eats my flesh and drinks my blood remains in me, and I in them. Just as the living Father sent me and I live because of the Father, so the one who feeds on me will live because of me. This is the bread that came down from heaven. Your ancestors ate manna and died, but whoever feeds on this bread will live forever.” He said this while teaching in the synagogue in Capernaum.
How do sola-scriptura-people-who-reject-transubstantiation interpret these verses and still refute transubstantiation?