提问于：
浏览数：
3514
我看了下
https://www.bilibili.com/video/av46184147?from=search&seid=5450536851460495244
发现我的相照应操作完全没办法完成，只有显示如下的情况
而且我按照
file:///E:/Install-LaTeX.pdf
操作是时，没有问题
但是换成别的tex文件就不行了，
内容如下：
```tex
\documentclass[12pt]{article}
\usepackage[margin=1.25in]{geometry}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{prop}[theorem]{Proposition}
\newtheorem{cor}[theorem]{Corollary}
\theoremstyle{definition}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{claim}[theorem]{Claim}
\newtheorem{remark}[theorem]{Remark}
\newtheorem{question}{Question}
\newtheorem{problem}{Problem}[section]
\newtheorem*{fact}{Fact}
\newtheorem{example}[theorem]{Example}
\newtheorem{exercise}{}[section]
\newtheorem*{solution}{Solution}
\newtheorem*{asolution}{Alternative Solution}
\begin{document}
\title{Introduction to \LaTeX}
\author{Jude Gao}
\date{2019}
\maketitle
\section{Introduction}
Hello, world! $5x=100$
Then we get $$x^{22} + y^2 = z^2 + s_{111}$$
$$
\underbrace{\bar{f}(n)}_{\ne 0} := \sqrt { \sum_{i = 0}^{\lg n} 4^i \left(\frac{n_0}{2^i}\right)^\theta }
$$
\section{Results about positive integers}
\begin{theorem}
\label{inf_ints}
There are infinitely many positive integers.
\begin{proof}
Assume for contradiction that there are only finitely many positive integers.
Let $x$ be the largest positive integer.
But then $x+1$ is a larger positive integer, contradiction.
\end{proof}
\end{theorem}
The proof of Theorem \ref{inf_ints} uses a technique called proof by contradiction.
\subsection{Lists}
\begin{enumerate}
\item \underline{ordered list}
\begin{itemize}
\item Jude
\item Gao
\end{itemize}
\item unordered list
\end{enumerate}
\begin{itemize}
\item ordered list
\begin{itemize}
\item \textbf {Jude}
\item \textit {Gao}
\end{itemize}
\item unordered list
\end{itemize}
\subsection{Alignment}
\begin{align*}
y &= 4x_1 + 5x_2 - 3x_1 +2x_2 \\
&= (4-3)x_1 + (5+2)x_2 \\
&= x_1 + 7x_2
\end{align*}
$$
\begin{bmatrix}
1 &0 &-1 \\ 0 &1 &33 \\ 22 &-1 & 22
\end{bmatrix}
$$
$$
f(x) = \begin{cases}
1 &\text{if $x$ is rational} \\
0 &\text{if $x$ is irrational}
\end{cases}
$$
\end{document}
```
结果如下：
求解？
