Identifier help

• seem to have a working script so far, the only errors i have seen is a "cs1041: identifier expected" at lines 45,61,77,93.

anyone know how to fix it? C#*

*FIXED

 using UnityEngine;
 using System.Collections;
 
 
 public class HealthController : MonoBehaviour {
     
     public GameObject deathHandler;
     public float maxHealth = 100;
     public float hitDamage = 3;
     public float healingSpeed = 2;
     public GameObject hitParticles;
     public GameObject MGBullet;
     public GameObject Bullet;
     public GameObject Missile;
     public GameObject Pellet;
     public AudioClip hitSound;
     [HideInInspector]
     public float health;
     
     public float normalizedHealth { get { return health / maxHealth; } }
     
     // Use this for initialization
     void OnEnable () {
         health = maxHealth;
     }
     
     // Update is called once per frame
     void Update () {
         if (Time.deltaTime == 0 || Time.timeScale == 0)
             return;
         
         if (health > 0)
             health += Time.deltaTime * healingSpeed;
         health = Mathf.Clamp(health, 0, maxHealth);
     }
     
     void OnHit (MGBullet @MGBullet) {
         health -= 6;
         health = Mathf.Clamp(health, 0, maxHealth);
         
         if (hitParticles) {
             GameObject particles = Instantiate(
                 hitParticles,
                 MGBullet.hit.point,
                 Quaternion.LookRotation(-MGBullet.direction)
             ) as GameObject;
             particles.transform.parent = transform;
         }
         if (hitSound) {
             AudioSource.PlayClipAtPoint(hitSound, MGBullet.hit.point, 0.6f);
         }
     }
     void OnHit (Bullet @Bullet) {
         health -= 10;
         health = Mathf.Clamp(health, 0, maxHealth);
         
         if (hitParticles) {
             GameObject particles = Instantiate(
                 hitParticles,
                 Bullet.hit.point,
                 Quaternion.LookRotation(-Bullet.direction)
             ) as GameObject;
             particles.transform.parent = transform;
         }
         if (hitSound) {
             AudioSource.PlayClipAtPoint(hitSound, Bullet.hit.point, 0.6f);
         }
     }
     void OnHit (Pellet @Pellet) {
         health -= 9;
         health = Mathf.Clamp(health, 0, maxHealth);
         
         if (hitParticles) {
             GameObject particles = Instantiate(
                 hitParticles,
                 Pellet.hit.point,
                 Quaternion.LookRotation(-Pellet.direction)
             ) as GameObject;
             particles.transform.parent = transform;
         }
         if (hitSound) {
             AudioSource.PlayClipAtPoint(hitSound, Pellet.hit.point, 0.6f);
         }
     }
     void OnHit (Missile @Missile) {
         health -= 100;
         health = Mathf.Clamp(health, 0, maxHealth);
         
         if (hitParticles) {
             GameObject particles = Instantiate(
                 hitParticles,
                 Missile.hit.point,
                 Quaternion.LookRotation(-Missile.direction)
             ) as GameObject;
             particles.transform.parent = transform;
         }
         if (hitSound) {
             AudioSource.PlayClipAtPoint(hitSound, Missile.hit.point, 0.6f);
         }
     }
 }
 

_----------------------------------------------------------- EDIT

i figured out the class thing, but i have a different error now, it thinks that missile, MGBullet, and Bullet are types, but Pellet is a field. how do i get them to be fields?