By attaching the verb 続（つづ）ける
‘to continue’ to the 連用形（れんようけい） (ます stem) form of another verb, we will be able to express that ‘(A) is continuing’. Let’s have a look at a few examples of this structure.
Sally will continue to run until it gets dark.
I will continue to write the same kanji until I memorize it.
There is a difference in nuance between connecting one verb to another verb through the 連用形（れんようけい） form, or through the use of the 接続助詞（せつぞくじょし） て
. The former implies that ‘(A) is being done in the way of (B)’, while the latter implies that ‘(A) is being done, and then (B)’.
Japanese is difficult, but I will give it my best and continue with study. (Emphasis on the continuation of studying)
Japanese is difficult, but I will continue giving it my best with study. (Emphasis on the continuation of giving it one’s best)